Rehousing Vintage Lenses – The journey to cine lens masterpieces with G.L Optics – Epic Episode #19
This episode it is all concerning rehousing–.
we are taking you along on the journey to “rehouse” our Canon FD Dreamset..
We are mosting likely to take the enigma out of that process and offer you.
incredibly beneficial pointers and techniques, about evaluating, dealing with, cleaning,.
and dealing with classic lenses … If you love vintage lenses you understand that they are.
not fit for specialist film manufacturings … for many factors.
“” Ehhhhhh … PL” “”” This is it … Call my dealer.” “”” My male … just watched your FD episode … ” “”” … you wish to come rehouse that glass?” “”” You bet your pleasant ass I desire to ” “”” Obtain your butt on a plane and pertain to China” “”” I’m nearly there…”” ” “Avi !!!””
“.” Nikolas you large vibrant F# ### …
Allow'' s rehouse that Glass” “Yes … We flew to China! This will.
give you the chance to see action by action what happens in a rehousing process.
… and there is so much to learn below … IF you plan to rehouse your vintage lenses OR if you are.
curious about optics and filmmaking in basic. We are going to offer you a refresher course in.
assessing vintage lenses with examples from haze, to cleaning up marks, to fungus,.
to misalignment of components. We are there when lens specialists.
dismantle and cleanse our lenses, when the components of the new housing are manufactured.
We show you the mesmerising procedure of the machining …
the assembly … the measuring … noting, … inscribing … paint and testing of our Canon FD set,.
including a new super rate focal length. We additionally had the opportunity to compare our FDs with.
an actual K35 set, to do a bit of misconception busting.So, get some
snacks, band in … and.
allows go out to G.L Optics in China! Hello, and welcome to the Media Division. Let’s begin by taking one action back. I know … If you are a professional you.
already understand why you rehouse lenses, and, which ones you are going to rehouse– however, as we.
like to take everyone along, let’s return to the essentials. I think there is a lot great info.
below, that it also interesting for innovative individuals. Let’s begin with why one would rehouse a lens ….
and which are the ones you ought to rehouse. If you have actually been around this channel, you.
understand that we have a love for vintage lenses. In a world of clean and sterilized digital sensors.
and “lenses” that are develop to be “unseen”, classic lenses are a fantastic way to breathe.
some spirit into your pictures. They can present unpredictability and surprise to the.
magic sauce that is your cinematography, something that can make an image interesting.
… for your audience in addition to on your own. Rehousing is the means to make a precious.
lens set able to be used in an extra expert context – and of course, this will.
increases their worth … and I suggest that in terms cash and usability..
Actually, I have never ever before seen a severe manufacturing manage points like cine.
modded lenses unless they definitely had to.Obviously a rehousing will. give better technicians that are more durable and suitable for. professional applications.
A long and smooth focus throw, exact markings,. expert tailoring,
accurate difficult quits with an exact flange, Internat emphasis and zoom, PL or LPL. installs, merged dimensions
for matte boxes … and more. Obviously, rehousing benefits.
a lens past practical points. Many rehouses supply to change the initial.
iris with a contemporary option in situation there are troubles with the initial, or because.
you prefer rounder bokeh than the original iris provides … even more concerning this later. The optical axis of a lens can be changed so images do not “leap” throughout emphasis draws … which.
classic image lenses tend to do. And of program, there are things like haze, dust, internal.
reflections and oil marks, that can only, be cleaned up when a lens is totally.
disassembled and components are changed. Rehousing does not alter the optical.
layout of a lens. A lens that is not remedied for breathing deliberately.
will certainly take a breath after rehousing yet hand collimating can reduce it in some.
situations. As stated in the introduction, G.L Optics does supply modifications to.
optical layouts to be able to provide bigger focal lengths in in otherwise insufficient.
or inconsistent set … even more regarding that later.To create a premium quality real estate of a cine. lens is normally very complicated and as a result pricey … Suppliers of brand-new lenses have the. excellent benefit that they can generate bigger numbers. Production line, standardisation,. and division of labor lowers the expense.
Rehousing classic lenses is really various …. there are a great deal of various brand names
, lens kinds, and variants also with specific. lenses that look similar on the exterior.
Companies call for CAD developers and. a lot of knowledge to even prepare a rehousing– especially a great one. While rehousers generally deal with a real estate system outside, the digestive tracts. are extremely various, depending on the brand and kind of the benefactor lens. Every lens brand,. focal length, and variation has its very distinct style and calls for individual parts. It. is a sort of a three-dimensional problem. Usually, suppliers do n’t rehouse a details. lens wholesale so, they have actually to be produced and assembled one by one. Mechanical components. need extremely precise machining so lenses operate smoothly … this can only be attained with. high end production and gauging strategies. All this implies that whatever has to be done by. skilled personal and by hand, except for the CnC machining.With more variant of lenses a. manufacturer uses to rehouse, the a lot more complicated the hole video game comes to be– from this viewpoint,. the cost of rehousing is quite affordable. Pondering the cost of numerous. thousand bucks for a rehousing, only one of the most” fascinating “lenses and. only the finest sampling of those lenses should be taken into consideration.
Standardized. lenses that does not have intriguing specifications or stories are not most likely to be. a hit on collection, or in your rental house. What lenses will be preferred in the future ? What. prices go up, what prices decrease … no one recognizes. It’s a little bit like great wine, or watches, or. vintage cars. A Toyota Corolla wont go up in price. A classic Porsche may increase, yet. it might additionally drop … if you always knew, it would be like a permit to print cash, right? A certain exclusivity and low numbers — much like with a timeless Porsche– is. a great basis … but not a guarantee.Traits that make a lens special can be things. like thoriated glass, as these are prohibited to produced because the 80s, or uncommon high lens. rates a partnership to
impossible lenses, or maybe they have actually been utilized to fire. famous movies … you obtain the gist … a great “story” stimulates interest in a lens collection and can. be the start of a fantastic personal tale.” Are you snappy that I made you.
type 10.000 flyers to assist us?” From a cinematographers viewpoint, there. is little usage in a solitary focal size, so rehousing a functional collection is the method to go, unless you have one actually rare or. or else desirable lens– or perhaps a zoom. A lens that appropriates for rehousing. is usually refers to as a “Donor “lens The contributor lenses glass and finishings. ought to remain in excellent problem … relatively. We will certainly later check out possible. damages and exactly how to detect them.As far as we researched, only G.L optics uses. to source the benefactor lenses for a bigger range of lenses, for a remarkably small up margin. That. additionally means that you can have them
fill up empty spots in your collection, if you don’t have the nerves or. time to resource an uncommon focal length on your own. With our our “Fabulous cine lenses on a. Budget plan ” episodes we explored the Contax Zeiss as a surrogate for the Zeiss Super. Rates, the Mamiya 645, for their unique appearance and use in Christopher Nolan Films and the. Canon FD and their relationship to the Canon K35. We chose to rehouse our cherished Canon.
FD SSC Aspherical” Dreamset”. Because the action of Arri and Sony to complete structure cine.
web cams, the Canon FD have hit astronomical worth as their K35 cine brother or sisters became. the most expensive serial lenses ever … brand-new or vintage.The FD Aspherical create a. look that is basically similar to the K35, and some focal sizes utilize thoriated elements. … their market worth, story, restricted numbers, and the one-of-a-kind photos they generate, make. them amazing prospects for rehousing.
Unlike the K35, The FD schedule never had a high. speed 35mm lens.
As this is a vital focal size
, one either has to cope with the offered. 35mm f2 … or substitute with alternatives.
G.L Optics uses a third possibility. that allows you to remain within the FD range and still have a T1.3. 35mm … how does that job? They modify a nFD 50mm f/1.2 with a big.
large angle adapter! We are captivated! Naturally, G.L Optics can also rehouse the f2,.
or a Minolta, and even a Contax Zeiss to fill up the spot, however as this is an unique solution,
a great. story, and we actually wish to see exactly how the wide angle adjustment works we chose this deal. We will certainly reveal you later on, exactly how well that works.The” usual suspects” for.
private rehousing services are: True lens service or brief TLS in the UK, No Optics in the U.S.A.,. White Factor Optics in Finnland, and G.L Optics with headquarters in.
China an offices in vital markets. All of them offer advanced rehousing based. on lengthy term experience,
but price, waiting listing and repayment options differ dramatically.
There is likewise a newcomer worth discussing and that is Iron Glass. They are been experts. in Soviet and eastern German lenses. TLS, Zero and Whitepoint had around the exact same.
price relying on the certain focal lengths, averaging out around 6.500 United States Dollars.GL Optics.
rate is 5.000 $for a FD Aspherical rehousing If lenses don’t use drifting components like the. aspherical do. G.Ls price is minimized to 4.000$ TLS has a waiting listing of one and a halve year.
Zero optics had the lengthiest waiting. time with over 2 and a halve years.
Whitepoint is one and a halve years. G.L Optics is much faster offering 2– 4 month deliveries … also
much faster.
thrill orders are flexible. Deposits differ a bit about when to pay. what … and refund ability– normally, all services desire a down payment. prior to manufacturing starts. Just G.L uses sourcing of benefactor lenses and a. 30% down payment has to be created the worth of those. G.L is going to use their Mark 5 real estates. with 110mm barrel diameter and we likewise going to get an iris substitute.
and a personalized design with steel caps. Complete please note: G.L Optics was so type to pay. for our journey and to rehouse our lens set totally free, simply to show the top quality of their solutions. Lucky us … once again! But you should bear in mind that
a manufacturing such as this price us months if you. count pre manufacturing, taking a trip, and article.
Of program we are really happy for the chance. and the invite … however that does n’t imply that we can not provide you our sincere point of view based on an. observation, our experience, and our tests.After my supplier called, I packed. my lenses, some fresh underwear, and boarded a trip from. occident to orient … to China. Chengdu is a significant city with lots of districts,. airports, large traffic … you call it … a genuine titan. Certainly, I just saw a small fraction of.
that while I had, particularly the Pidu district where the G.L Optics lies. My impacts from China were rather various to what I expected … in many.
methods. The roads beneath the high rise buildings can give you a little Blade Runner ambiance.
While caucasians could be a common sight in cities like Shanghai and Beijing, they are entirely. lacking here … individuals commonly provide you a surprised look when you pass them. Certainly you see things. that are unique to a westerner, yet there are many acquainted points also … and a bunch of brilliant concepts. and points that I would love to contend home
, also. Shopping centers are still significantly active around below … and the one my hotel remained in, even had an IMAX cinema … playing flicks like “Oppenheimer” and” the. Marvels” … besides Chinese launches obviously. Chinese have no issues to review. western alphabet and numbers, they are quite usual here.Shops often bring. english names, or perhaps Danish– oddly really few seem to actually talk english. Besides the neighborhood service, you all see a whole lot of the shops, chains,. and brand names you are used to in the west. Typically, Chinese people seems to very vibrant. and busy, but quite pleasant. Everything is really digital … You youths vlogging in the.
roads a whole lot, people are on their phones a lot, you pay with applications everywhere … if fact I.
have not seen a single yuan costs throughout my remain. The average earnings around here is 900 dollars per.
month, but prior to you pity them … Food is regarding a forth of United States rates and the lease of a two bedroom. apartment or condo in one of the lots of high-rises is between 100– 200 bucks. When was the last time. you payed much less than 20 %of your earnings on rent? The typical food around here is” hot pot “. and that is what the majority of dining establishment offer.Chicken feet are taken into consideration a special … yet if you lust. for food you are much more utilized to … there are a great deal of familiar faces … using intriguing blend. cooking area … like Kentucky fried chicken … … feet?!?! I can discuss my experiences for hours,. however … this is not a travel vlog … so, Iet’s take place. G.L Optics lies in a market park.
inside a different 4 flooring structure– below we locate all needed departments. to rehouse lenses under one roof. Mr. Guo is the G, and Mr. Li is the L of. G.L, they started G.L Optics 13 years ago, and they are still heading the business. From the. administration, to CAD layout, examination, cleaning, CNC machining, steel workshops, assembly,.
optical measuring, laser engraving, p ainting, and quality assurance, right approximately packing and. shipping– we will certainly see each
of those departments on our trip through the rehousing procedure. In total, there are 63 employees functioning right here, and if you expect some type of factory,. let me adjust your perception … G.L optics is a family firm in the ideal sense … not. that it is owed and operated by one family members, but that several workers are participants of the. exact same families.I seemed like this provided the office a really wonderful ambiance– workers. appreciate their job, the company, and crucial for you … their products. G.L started rehousing with a Tokina 11-16 zoom lens, and a bit later on the. preferred Sigma f/1.8 ART zoom lenses. Since nowadays G.L has massively.
broadened their array, proficiency, and capacity. G.L Optics provides rehousing. for people along with organizations. G.L can supply very individual designs. based on the same, very advanced digestive tracts.
To give you an impact of the facility,. come for a” gain access to all locations “scenic tour. G.L Optics
is able to provide swiftly even. when need is high due to the fact that the spent greatly in their maker park … there are. numerous makers of every kind stopping bottlenecks and making certain a smooth workflow
. When our parts obtain machined we will give you a much deeper insight on. the devices and the process.Another active ingredient in the quick. transform around capacities of G.L is, that they maintain a great deal of parts. in storage. The sheer number of lenses and suppliers that are rehoused. below make the logistics a Herculean job. “Wow …”” This is all prep job … this is storage for components. that have been pre done, it is simply fantastic “Let’s visit the setting up. room is where optics and auto mechanics collaborated … a team of lens. experts utilize their knowledge and a fair bit of finger mastery. to offer lenses a 2nd cine life.” I suggest, it is such a satisfaction to see.
the experts work … I mean, I do it myself, however that is not equivalent, this is. the means you ought to do it … you know, I learned a lot of points. below, it is just brilliant.” … without a doubt a great possibility for me to
learn. things that might be trivial to experts, however, for somebody who is self showed, it is. priceless.Starting with the next phase
, we will certainly share a great deal of those understandings.” I suggest, when you stroll about below, there is. so much lens p. in every edge, therefore much in growth. This for instance … well, I could. tell you however I had to eliminate you if I did, I suggest, that is one hefty attractive beast … remarkable. If you. are a lens fan, it is simply outrageous here.
” Incidentally. Following our FD rehousing we fired.
in docudrama design, because we intend to reveal you what’s truly happening while doing so. and naturally we can’t do irritable lights or haze areas where lenses are set up and. one has to be extremely quick on their feet.
Whenever you see video footage that is coordinated and. lit, that it is the job of Ma, Jonathan, and Avi Cohen.They poured a great deal of initiative right into generating. some fantastic looking scenes for this episode.
… there is always one!;–RRB- “So, this is the Chinese. staff capturing B-Roll for us, and we have a terrific Chinese DP … she is awesome. and she speaks English … that’s really handy. “” And this is Jonathan …” You could have actually noticed that the B-Roll. was fired on classic lenses … well, G.L has the ideal stuff right here” Mamiya … 645 ”
” West versus eastern … battle!” “Here is an effort for the globe… the Chinese do one thing truly much better
, which is power plugs. Can you see this thing?. It has European, American, and Chinese plugs at the same time, so, you can connect in anything. You don’t need adapters … F
. fantastic concept. Since I got that out, and this right into my system … allow’s begin the process of rehousing our wonderful. Canon FD Set … by examining the benefactor lenses.
The bright side is, that you do not. need costly equipment to assess a lens … a brilliant source of light and. a cellphone will simply do great.
Every lens that G.L Optics sources themselves or. that is supplied by a consumers
begins its trip by being analyzed by a specialist.Especially. with classic lenses, issues are extremely typical and considered typical to a specific level. Some problems can be seen without disassembly and some can only be taken a look at by taking the lens. apart. G.L optic papers the sort of problem, on which component and in what position it is. Some flaws are neglectable
, some can be boosted by cleansing, and some will certainly cause a. irreversible and visible decrease in photo top quality. But, what damages are there? Which. are typical, which can be repaired, and which need to cause disposing of. a lens? We spoke with the experts at G.L Optics and more than happy to offer you. a refresher course in lens examination. So, you are the pleased owner of a” new “vintage. lens and wish to tell what abandons the lens has, perhaps to choose if you want. to maintain it, or sent it back. This is an Olympus OM 85mm f/2 tand this. already has a Leitax EF place conversion. Certainly you blow away the surface area dust and.
clean the lens with fiber towel and alcohol.To explore the lens without disassembly, you. going to need a light resource.
Preferably you utilize one with flexible arm, like a normal desk light. Beaming the light from the back right into the lens, will brighten the flaws we want to examine… it is a bit difficult to obtain the right angle, yet if you play around a bit, you.
quickly see when it it takes place. You can use a darker object or even a. finger in between the lens aspect and the light source to make little specifications and problems. more visible.If you check out a zoom lens, it is very important to zoom via the range. as some issues only obtain visible at particular zoom factor. It is very important to always pay. unique interest to sides
of the glass. A phone with a good video camera that provides. close emphasis and magnification assists a
whole lot. The live sight with a Phone Video camera. gives you 3 advantages: You can magnify the picture to. much better evaluate what you see. The shallow deepness of area of the close focus makes it much easier to recognize the. position of the provided surfaces. And you can record the flaw. by taking an image or a video clip.
Scratches. Some scrapes are noticeable, when a sharp things reduced into the surface of an element… this is frequently a tool damages that can likewise happen inside a lens during an unprofessional service. You can not just see those scrapes, you can dropped them, too … the suggestion of you finger usually does the. work, but when you play guitar, and you pointers are a
little bit leatherlike, you can also make use of a fingernail. Some typical scratch marks are brought on by the lens being dragged overs a surface.Typically. these marks reveal up in the center of the front element.
Scratches can be visible at high f-stops. and cause flares, relying on their position. Cleaning up marks. Cleansing marks are extremely small scratches that are primarily. round. The are created by fragments on the lens or in the the cloth while the lens. is cleaned up. Cleaning up from the within out, and with little pressure minimizes the danger of. leaving marks, and certainly, surface area and towel require to be clean.Cleaning marks generally only.
influence the covering. When you touch the glass with
your fingertips you can not feel the scratches. as they are not deep enough. Really serious cases like in this instance could be described as haze. triggering degradation of picture quality and flaring. Lens components are commonly glued together in groups. These groups are not taken apart throughout rehousing. If the adhesive weakens over years. it can cause various troubles. Normally, this happens from the outside very first, as moisture. goes into the system from the outside. Yet, it is likewise feasible to have separating in the facility. of
a group,
usually triggered by thermal reactions. Haze can be created by surface pollutants. like water vapour entraped inside a lens.This can be is quickly cleaned up when you open. the lens.
Haze can also be a fungi however this will have particular pattern wie will.
show in a minute. Like defined prior to, separation can create a haze. on the brink or in the facility. This example lens is home to a number of little aliens. Fungi can be conveniently recognized by its plant like shapes. It grows inside a lens when moisture.
is high over extended times.
Fungus can be cleaned but also consumes into layers over time. Glass can have chips and splits when it has beed dropped or to much tension is used to an. component. Chips can be unseen in the picture, when the are off facility, however. they can also cause flares.The paint inside a lens barrel can.
come off due to chemical procedures like deterioration or mechanical damages, for. example triggered by tools.This instance ist a team that has paint defects that may.
trigger flaring … as it is inside the group, this paint defect is likely to be chemical.
deterioration as opposed to triggered by devices. For rehousing just paint defects inside a.
groups are importent, as the rest is changed. Radiation of Thorium inside a lens aspect can.
trigger a crystallographic flaw called f-center. The glass transforms more and much more yellow over decades,.
imitating a filter. Besides the change in color the transmission obtains decreased. Just like corrosion on.
a vintage car, this is not taken into consideration a classic attribute. The impact is totally.
relatively easy to fix by subjecting the lens aspect to UV-light. And, no … the radiation is not hazardous.
to you unless you grind and consume the lens. An Iris can reveal mechanical problems and can be.
influenced by pollutants. This is just vital if the iris is not changed in a rehousing..
Cleansing can potentially harmed the iris.And this is our enigma lens … there is a.
round halo on this single lens element, so there can not be splitting up and this is.
not brought on by mini scrapes … honestly, we have no concept what is taking place.
below. If you recognize, leave us a remark. Currently, which of the problems are.
vital relies on numerous variables: Contaminations can be cleaned, radiation.
issues can be healed, an iris can be changed. How cut is the flaw, where is it.
situated, just how picky is the consumer, and of corse, exactly how unusual is the lens. If there.
is no choice, one has to be more flexible. Severe problems to the coverings are problematic. Eliminating and replacing a finish can damage the.
lens. Likewise, modern coverings are very different to contemporary ones. Separation has the same.
problem, while it is practically possible, it is complicated. No rehouser provides repairing.
separation or coatings, regarding we understand. There are various other issues that relate to the.
positioning of the elements, yet to examine those, you have to place a lens on a projector or film a.
graph if you do not have access to a projector.Projectors are the optimal tool to. expose the troubles and high qualities of a lens from an optical factor of. sight … with the exception of color performance. A lens projector works like a slide projector,. yet utilizes the lens to be reviewed to projects a test graph on the wall surface. The graph is not a. common slide however a micro bordered metal plate. We have my Canon FD 24mm f1.4. SSC on the projector currently.” So Mr Lee, we are here in the projection. area … just what are we seeking.” Initially we take a look at the center optical high quality,. the projected components expose the dealing with power and aberrations in the facility, as well. as distortions and diminish over the whole field of vision. We see if the optical. axis is right or not, and obviously, which format is covered by the original lens. A. projector can reveal if aspects are misaligned
, which creates optical inconsistence between the. left and right side.A rehoused lens needs to shows the same coverage as the original and proper. misalignments for optical consistence. As you can see, the image of your 24mm aspherical. jumps a little during focus.This means that the components are not completely cantered
. on the optical axis– something usual with vintage lenses designed for photography
. We are mosting likely to repair that with our rehousing. If a lens passes the very first evaluation and. the customer has provides his thumbs-up, the lenses can be disassembled and cleaned. Disassembly and cleansing is straight forward yet. needs tools and experience with the numerous kinds of lenses. As several lenses are really useful. and uncommon, one of the most delicate handling is required. After decades of activity, a great deal of lenses are. distorted and can be extremely difficult to to uncouple. The expert completes the documentation by keeping in mind. which issues were improved by the cleaning.One much more interesting
thing is the cleaning. strategy of the specialists that was brand-new to me … The Professionals “assemble” their swabs on the fly, by. covering polyester Fiber around tweezers.
This is far better than making use of smaller swaps as the lengthy.
fibre is less likely to contaminate the lens. This has likewise “cleaned up “to me,. which fluids are best to tidy lenses, there are just so several voices out. there mentioning opposite point of views on the matter. The experts at G.L utilize Isopropanol. Alcohol– brief IPA– and Aceton.
Aceton is extra efficient and. has the benefit over alcohol, that it dries out quickly without leaving any type of marks. Aceton can influence some extremely old finishing and plastic kinds along with non anodised.
paint.Especially the painted in markings can be affected, so, one has. to recognize what they are doing
… and where. It is necessary to use chemically pure acetone. and to operate in a well broadcast setting. For you in your home, IPA is the much safer option. This is a 55mm Aspherical before disassembly … and. this is the “exoskeleton “that continues to be … including the initial iris that is mosting likely to be replaced. Side by side it is very fascinating to see, exactly how small the physical iris is, contrasted to. the optical entryway student in the system. Additionally, you can plainly see the radiation. damages and the minimized transmission. While all this is taking place, the components. for the new housing are made Everything begins with light weight aluminum tubes. G.L. has a selection of workpieces in storage space The tubes are reduced right into much more. useful sections ….
and that placed in a range of turrets and CnC makers. Light weight aluminum has wonderful buildings for lens housings, as it is strong, relatively easy to procedure, and.
extremely light.The barrels of some modern-day luxury lenses like the Arri trademark primes are produced. magnesium as that is stronger and a third lighter than light weight aluminum.
Magnesium has the disadvantage. that it can not be plated in this context. This makes the paint work of the barrel much weak. Not all metal works can be done by CnC equipments and there are a great deal of steps in the process.
that are best performed with conventional turrets, drills and milling equipments … all. run by knowledgeable
steel workers. Various tools cut and drill the. job pieces with extremely high precision. This is a machine is a Twin-spindle CnC Turret,. this has the benefit that unit can” turn over” a pice to an additional tool with outright. precision … this is enabling complex frameworks that would certainly be difficult to attain.
with one armed systems.Fluids are used to cool down the light weight aluminum and the devices themselves to stop. thermal reactions. Recording these processes is extremely difficult as fluids and flying shavings. are consisted of by the doors of the equipments. G.L was so good to close down the cooling currently. and then, so we can movie the procedure more plainly for you. So, if you see overheating,.
don’t worry, this is simply for demo. What you see below is a Heliocam CNC that.
cuts the groove of a helicoid … … at a ludicrous mini meter accuracy. This is. quite fascinating so let me broaden a bit. To move lens teams inside the. lens, for focus or for zoom, there are 2 various mechanical. systems in operation: Helicoid and webcam. Modern cine lenses and rehoused cine lenses can.
use Helicoid or CAM.Modern vehicle emphasis lenses utilize webcam systems so the servos can run quicker. CAM.
systems can modify the the rotation speed over the focus variety. That means that the focus with.
can be much longer towards infinity and much shorter on close emphasis. Web cam systems are technically. much more intricate to built and to solution, and if the pins wear away, the focus can create.
backlash.G.L Optics uses the traditional helicoid system. Helicoids are simpler to develop,
. put together, and solution but they additionally need very exact machining for the grooves to function.
smoothly– appropriate to the mini meter world. Prior to a machined component is passed down
to. assembly, quality assurance determines the physical dimensions to ensure all worths.
are within resistance. This for example is a three-coordinates measuring. machine … that noise around
right. When all parts of a lens are prepared. the lens is put together- for the first time.
Besides to
examine if all components. fit and technicians work as desired, this is the only method to make.
optical dimensions with the lens. We won’t be able to explain to. you just what occurs with each and every action along the method of the. setting up– but we still believe is is really instructional and even mesmerising to see. the process. Take this as you moment of Zen … Currently that a” functioning” lens is. set up, it is evaluated and parallelled. The lens is installed on the projector to. make sure that all lens aspects are properly straightened and spaced. Only if everything is. in order the lens with achieve the optimum dealing with power of the design.Here we can. first see enhancements to the original lens. This is a Collimator, it gauges the. right flange range optically. A cine lens should have infinity emphasis. at the difficult quit of the barrel. The place has to be shimmed as necessary, this. can take a couple of repeatings to obtain it right. All adhering to dimensions will. just be proper if the flange is spot on. We decided to have actually the iris changed with a new one. The epic K35 have a high blade count with curved blades triggering a completely round. Bokeh, while the FD have the typical picture lens iris of the moment, making use of 8. blades that triggers octagonal bokeh.
As we are opting for a fake K35. established utilizing the SSC aspherical FD, we normally went with the iris substitute. Remarkably the brand-new Iris comes in components and needs to be set up by hand — blade,. for blade, for blade … the brand-new Iris has 15 rounded blades that provides nice round
. Bokeh … similar to the Iris of the initial K35. I constantly assumed that measurements.
for T-stops and distance marks are made when with a model and after that applied. to all future production lenses.This is not the means it is done at G.L. Each and every single lens is.
gauged and marked for everything independently. This is a T-Stop Equipment.
A T-stop is a f/stop. with settlement for transmission loss. A sensing unit determines the lumen sent via center. of the lens and figures out a precise T-stop. The professional is marking the proper T-stops. on the aperture ring with a felt pen. The system gauges to the third decimal location… this accuracy is virtually not called for … the turn of the aperture ring would certainly be. a lot less than the width of the noting, so do not stress if the presented. value is rounded for the markings. This is range measuring tools. The.
professional is noting the right focus points for each given distance with a felt pen … in. feet or in meters depending upon the customers want to use imperial or statistics system. We. selected the royal system. A diopter permits to measure longer distances up to.
infinity on a fairly brief system. BTW, G.L can give interchangeable.
ranges on consumers demand. Due to the capturing timetable, our desire. collection had to be rehoused in document time, G.L made the impossible possible!. This implied that all the lenses of the collection were put together at. the very same time … side by side.And this is the mysterious 35mm T1.3 … well, it. is still a 50mm right now, however you can see the big lens element on the side … that is the large. angle adapter that will turn the 50mm right into 35mm. If there where doubts if the wide angle. adapter protects the lenses speed, below is the brand-new 35mm on the T-Stop. Maker, and certainly … it clocks in at T1.3.
When all markings remain in place, the. lenses most likely to the engraving department.Engraving is done making use of lasers
, and,. you can picture that it takes quite a strong laser to edge strong aluminum … you. better don’t put your hand under this. The consumer can chose the style.
of his lens markings himself with the help of G.L Optics … fonts
,. logo designs, position, positioning size, colors whatever can be custom developed.
or you can select from propositions by the G.L art department.We made made our customized.” black hole “layout suitable our specific set completely with a canon FD logo design that is only. partially repainted in … this is mosting likely to look remarkable. Accuracy is paramount and. engravings are permanent, so all markings and logo designs are evaluated on work. pieces initially. Each noting for emphasis range and T-stop is inscribed individually with.
the laser engraver being changed manually … If you have ordered the attractive aluminum caps. rather of the rubber caps, these are inscribed with you individual styles, also. If you purchase a. Porsche, you want the good edges, as well, best?! After completion of the engravings,.
the components most likely to the anodizing After plating the markings can be repainted.
in … as claimed prior to, the client can choose the colors he favors
, naturally only to the.
extend as paints are available.This is an additional one of those producing techniques, that. will provide a whole new gratitude after you have seen the process. Every number, every.
mark, every letter is repainted in by hand with a syringe type of tool … shade is launched. from the syringe when a pedal is pressed. At this phase the paint doesn’t appear like. in the result … it looks kind of crude, yet this is temporal.
While the paint. dries, the surface tension lowers and the liquid moves into the details of.
the engraving– with surprising information. As we discussed, we are not. going to repaint in the Canon Logo simply leaving a black relief. as a private style choice.The paint is baked in operation an oven, making. it hard and permanent. Drying out can trigger small splits in the paint, and every
number, mark,. and letter is inspected after cooking. If there are any kind of defects, they are healed … and the baking. is duplicated, until the paint job is perfect.
All parts are ready for the final assembly currently. All lenses are evaluated one more time for their. mechanical functions, flange distance, and all marks are reconfirmed to. be correct after the assembly.All lenses are one more time installed. on the projector for a final check. Do you bear in mind exactly how the photo of my 24mm. aspherical made use of to jump prior to rehousing? Right here it is after rehousing.
The lens elements are currently completely lined up along the optical axis … and,.
the image doesn’t get on emphasis draws. Terrific! The rehousing is finished … and what charms.
they are. A perfect instance for excellent craftsmanship, innovation, and determination. All lenses are photographed to guarantee that prospective future orders will match the existing. lenses for an excellent set. If you are not in Chengdu for a pick up … G.L has a a delivery. department that sees to it that your valuable lenses traveling in the most safe method feasible.
Lenses. are crammed in a trip situation with tailor made foam inlays that is extremely usable for taking a trip later on.
on of course.A great deal of bubble wrap makes certain that also the flight case itself is safeguarded. before the set is delivered to its new owner.” My lenses prepare now, and I. can not count on what a document time G.L Optics placed these with each other and they. are absolutely wonderful. I can not thank G.L optics and their group enough … this is. the group that really did the work … and, thank you so so a lot, it was terrific!. Thank you Nan for heaving me. It was just a wild journey for me, definitely gorgeous. And I heard that Mr. Li has something really extremely special for us right here today … these are the.
original K35 lenses, which provides us the chance to do a precise contrast– lens. to lens– and I will certainly show you today. “So, this is it … this old trip case consists of. one of the most costly cine lenses that have actually been constructed in numbers … old or new. Congratulations,. you are now member of an unique club of people that actually saw original K35, and had the. chance to take a look at them.These are basically the only vintage cine lenses that cover complete structure. and use very superficial depth of area as a result of their high rate.
If you want to discover more. about the K35 and their relationship to the FD, please see our Episode” Legendary Cine. Lenses on a Budget plan “– with the Canon FD. Alongside,
the rehoused FD are. a lot larger than the K35 … certainly, the G.L rehousing
matches modern criteria. The K35 will certainly make use of the same housing after they are done. The iris is good and round at any stop. and I count 15 blades. And currently I’m going to bust a myth I resembled myself … that lens components. of the K35 and FD are basically identical.
Considering the front element of the 55mm FD. and the 55mm K35 you can plainly see that although both lenses
have the very same rate,. the K35 front aspect is a little larger. Considering the rear discloses that the FD have. an added, smaller sized fixed rear element.With the 85mm it looks diffrent … the.
front element seems to be identical. Again, we have a smaller sized fixed rear component. on top of the component you see on the K35. The 35mm is very various of. training course … this is the G.L vast angel adapter magic as there has never ever.
been a FD 35mm with f/1.2. Naturally, the included glass for the adapter makes the.
lens even bigger and heavier than the 85mm. The 24mm K35 was already disassembled,
. so I can’t provide you a straight contrast. I would have liked to via the K35 and. the FD on a video camera to provide you some side-by-side photos, however we didn’t have.
the moment or location to do that, and the unrehoused K35 didn’t. have an install we might use.While I am on my long way back home. you may wish to go on the trip to rehouse your valuable lenses to cine dreams … If you are in the East, you can speak to. G.L Optics head office directly and talk with specialists Nan Guo and Li Cheng in China. If you remain in the West, you can also most likely to G.L Optics U.S.A. web site “cinemaglass.com ”
. Right here you get the decade-plus-long rehousing knowledge of activity Director/DoP Avi Cohen and. his United States group
of professional creatives. Avi and his team were an important component of the production of. this episode. Having actually been with G.L for 13 years, having actually been filmmakers themselves, and. being based in Los Angeles they recognize precisely what you need
and can answer all. your questions during US working hours. You will certainly find links to all.
G.L workplaces in the summary Naturally, I lacked breath. prior to also reaching Guangzhou,
so I hoped on a plane back to Europe.I had an outstanding and motivating time. in China and I
want to provide my sincere many thanks to all those. who made this task feasible. I would love to give thanks to Mr. Guo and Mr. Li for welcoming me to Chengdu, for all the depend on that
includes such a production, for. arranging my travels and shooting gear in China, as well as their impressive friendliness. I want to thank my lens dealer Avi Cohen from G.L Optics United States for coming. up with the task in the very first place.” Contax Zeiss … “. “Sekor Mamiya … Oh Sh ###### “I am blessed to have a” Leading Equipment “supervisor. as my cameraman … you huge vibrant fu # *! I would certainly like to thank Jonathan from G.L Optics. United States, our Chinese DoP Ma, and the entire team for their super expert B-Roll video footage, that. you see around this episode. You will discover their social media sites get in touches with in the description. Thank you to Nick Hartmann, Lukas Teutenberg and Max von Stahl for helping behind and ahead. of the cam … having you about is valuable !
Thanks to the Marmalade for letting us. work with your team and in your studios.If you have never ever been to China … perhaps. you need to go. It is an experience that is really different to most places I have ever. been to.
Getting on the opposite side of a cultural divide
is a really healthy method to understand. that we are all the very same,
simply different. I am still stunned of the appeal of my. collection and exactly how fantastic they benefit me. The hold true functioning equines for a DoP.
and real good possessions for a rental residence. I hope you found this expedition right into. lens rehousing interesting and useful, if you intend to obtain a quote for your lenses,. I leave a couple of web links in the summary.
Please provide us a like if you believe that we. be entitled to one, this always aids with the formula. And, we have a whole lot of fascinating episodes. ahead, so, if you are not subscribed yet, please do so, and we can give you a. alert, as well, if you strike that switch.
We have a great deal of interesting episodes for you to. enjoy online already.If you desire to know what we are servicing, please follow us on instagram and. if you wish to talk with us, you can do that below in the remarks or in our closed Facebook team.– I’ll place web links to that in the summary. If you want to collaborate yourself with the. Media Division– as a maker
or as a filmmaker– you can constantly drop us a line,
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