abrasive I used Nigrin glass polish, made for car windows. Another example. We offer the following lens services: Reconditioning - Brings your lens to function as if it were new. ***** Site last updated –15 th February 2021 The coated lens has a higher licht transmission, the image is brighter. FLORIAN Ratzinger Lenses must be absolutely clean in order to do the job each lens element in a lens is designed to do. The bending is what a camera lens is all about—it’s how the lens forms an image. This is NOT the correct way of working. Now we see the gain lens coating have: Left side the coated Helios 44 - even the old simple lens coating reduced internal lens reflectionsmuch better than the lens bare it´s coating. Please visit my other photo Do It Yourself work, or my photo repair and modification directory with ~1700 DIY links to other photo tinkering sites. Is this possible, how can this be done? All much deeper than the estimated surface quality of a lens. Proprietor: Alan Marlow (HTEC Mech /Prod eng.) . In future, we intend to draw more on their outstanding expertise and knowledge to the benefit of our Leica Sport Optics customers, and have therefore decided to merge the service centres in Portugal and Wetzlar. We offer single lens coating. Re-lubrication - For those lenses that aren't as smooth as they should be. For the first test of this method I used the lens complete without disassembly. I have seen a guy named Hans Kerensky on Flickr do a lot of camera work and he may be of help. In the US I have heard Paul Ebel lens service is good and in Europe I am not sure. Prior to coating, all optics are either cleaned in one of our … And avoid polishing radioactive lenses - the fine radioactive dust would be very bad in your lung! 20.10.2013 Some have probably heard about lens polishing to remove scratches. In the picture I used way too much of it. Though pure, perfect colors are usually more important to camera lens manufacturers, optic makers can adjust the coating to increase or decrease the amount of light in the specific area of the light spectrum to correct unnatural tinting. It seems the exact description is not polishing but buffing. Observez des cibles importantes à courte distance dans les endroits exigus ou contrôlez facilement une zone beaucoup plus étendue en une seule fois grâce à la … Here you can see the cleaned lens: I could no longer photograph the scratch - but a much smaller of one of the scratches is still there. Element Replacement - Weathered, scratched, cracked, or damaged coating. abrasive I used Nigrin glass polish, made for car windows. When talking photography and optical lenses a ‘lens coating’ is a coating that is applied to the surface of a lens element which is designed to reduce light reflection and increase light transmission within the lens. As polishing Last Update: Does anyone have any experience they would like to share about recoating a lens element? The lens is hard-coated. It is G5’s mission to utilize our experience and knowledge of infrared technology and industry to provide the best services at the right price to enable our customer’s success. I have done some earlier experiments, but they failed. For the first test of this method I used the lens complete without disassembly. Prontor shutter cameras - Agfa, Ilford, Voigtlander etc. Vista Prime 8-Lens Set from $55,492.00. M. mineralcollector New Member. 19.10.2013 Here some numbers from a 3M paper: Deep scratches that could be easily felt with the finger nail are deeper than 20µm, those scratches that could nearly not be felt are between 5 and 20µm deep. Lens polishing during lens production is made with very exact bowls. During production, normal camera … I think sometimes the glass itself might be softer - which results in a very high risk to change the lens surface shape. It’s a safe bet that most of you never heard of lens fungus, but it’s a reality that you have to deal with in humid climates. Especially for AF and zoom constructions the mechanical force applied But in some cases it may be a problem. Scratches in lenses seem to be a big problem for some photographers - but normaly a short scratch will not be visible in the image. The anti reflection coating is very strong, and it is not easy to get such scratches! E-mail: alanmarlow1000@gmail.com . Scratches than can only be seen, but not felt are smaller than 5µm deep. It is most likely that your spherical lens is aspherical after polishing - but not in the correct way to reduce spherical abberation :-) Any changes to the production flow are costly. The anti reflection coating is very strong, and it is not easy to get such scratches! So, are there other problems with polishing the lens? By . Even with metal its not easy. Here I have adjusted exposure in Lightroom RAW development, the bright cloud right side in the background has now about the same brightness. Some cameras like the Olympus Trip 35 and original Canonets have a ring of selenium cells around the lens and since they’re ‘always on’, you’ll find that they’re sometimes now dead if they’ve not been kept in the dark. https://www.ducloslenses.com/pages/glass-polishing-recoating By far simpler to exchange that one suspect lens element for a new … This tinkering could destroy your lens, and the machine drill or polishing machine could harm your health! This lens has no longer an antireflection coating on the front lens - this results in ~4% less transmission for polishing we remove the lens antireflection coating. For the majority of lenses this is done on a "production line" of sorts. this way could damage the lens! Most likely this lens works better for infrared photography, probably it even is better for ultraviolett photography. Alan Marlow Mob/Txt: 07914 978105 . © 20.07.2013 Markus Keinath | Home | Impressum & Rechtliches. deep. Lens & SERVICE Technicians With more than 20 years of experience we are capable of dealing with almost every issue that can occur to Your modern or vintage lenses. I think sometimes the glass itself might be softer - which results in a very high risk to change the lens surface shape. At the same time, we use advanced vacuum coating technology. For many other optical devices such as telescopes, microscopes and theodolites where the visual image is observed but often not recorded the design can often be significantly simpler than is the case in a camera … They said they could do nothing because no more spare parts are available. Zeiss invented lens coating prior to World War II and it was kept as a military secret until after the war. Since the color of the coat differs according to the coating thickness, we adjust color and thickness to be the same as the original coat. Lens coatings are used by lens manufacturers to produce optics that can render an image with the least unwanted optical degradation. polishing we remove the lens antireflection coating. They have a layer of lens coating that will enhance the optical quality and protect the glass from damage. I am interested in hearing people's experience on having an old coating removed and a new coating applied. perpendicular light rays, for oblique rays even less transmission. And here the result - lenses without the interference filter coating: Now a comparison between a normal Helios 44 and my modified uncoated Helios 44-2: TW17 0ED ( Established 1988 ) Tel: 01932 247127. Please don´t remove the anti reflection coating from rare lenses - this would reduce their value extremely. . Lens Repairs, Camera Repairs, Digital SLR Repairs, AF Lenses, established 30 years. This is NOT the correct way of working. The design of photographic lenses for use in still or cine cameras is intended to produce a lens that yields the most acceptable rendition of the subject being photographed within a range of constraints that include cost, weight and materials. But first some other more normal images made with the Helios 44-2 with DIY removed lens coating: During production, normal camera lenses obtain a very accurate curvature, let's say a surface accuracy of about 130nm. I decided to strip all lens surfaces coating, exept between the glued lens groups. Mechanical - W orn cam drives or helicoils, iris repair. LEARN MORE. Please read our Shipping Instructions before packaging your lens or other photo equipment. I worked with an affixed drill and a sisal polishing wheel (for metal). But this lens flares could be used for photography and video film! I doubt you'd be willing to pay for re-coating that lens element. For the first test of this method I used the lens complete without disassembly. Especially for AF and zoom constructions the mechanical force applied this way could damage the lens… What lens fungus does is cause cloudy patterns to form on the lens. Please be careful! We included some packaging tips, Address Label and Shipping Form for your convenience.. Another important reason to clean your camera lens is keep your images free of particles that might show up in background highlights and other parts of the image. Sigma Cine Lens Set Build-a-Set. Now we see the gain lens coating have: Left side the coated Helios 44 - even the old simple lens coating reduced internal lens reflectionsmuch better than the lens bare it´s coating. Brinno TLC200Pro Caméra time-lapse -HDR Pour l'enregistrement de projets, paysage, autonomie de 80 JOURS de la batterie Faible luminosité à couper le souffle, objectifs interchangeables: Amazon.fr: Photo … Fill a glass with water and stick a spoon in it. © 20.07.2013 Markus Keinath | Home | Impressum & Rechtliches. This oil is also food for mold. Service and Repair. Often referred to as aluminising, re-aluminising, coating, re-coating, silvering or re-silvering. Aug 6, 2005 #5 I thought that I would jump into this discusiion as I have some relevant experience. Take a look at my earlier post on “ the effect of dust on lens bokeh” – you will see, that dust on the rear element of your lens will show up in your images, especially if you have large specks of dust there. Recherche la meilleure sélection air lentille de fabricants ainsi que les produits de qualité supérieure sur air lentille alibaba.com Shepperton. It seems the exact description is not polishing but buffing. The lens without the coating transmitts more red light - warmer colors are a results. A lens full of oil coated elements will not focus precisely nor will it render colors as it was designed to do. Lens fungus will rear its ugly head when moisture gets trapped inside the lens. Shadows in the image made with the lens with removed anti-reflection coating are less dark - due to more internal reflections - contrast reduction. Coated lenses started with the 50mm f.1.5 Sonnar. And mat looking surfaces have probably less than 2µm depth. With this lens surface During production, normal camera lenses obtain a very accurate curvature, let's say a surface accuracy of about 130nm. scratches could be removed, and scratches are several micrometer thick - so the lens form tolerance is destroyed! Our service team has more than 20 years’ optical experience. Sale. Supreme Prime Lens Set Build-a-Set. This Russian made lens is common and cheap, and easy to disassemble and reassemble afterwards. The scattered light from the scratch might be measured as a somewhat smaller contrast. And they would need removing before new application. This is NOT the correct way of working. Owner of new lenses most likely try to exchange the scratched lens element with a new one. When handled incorrectly, that will remove the lens coating altogether and damage the lens even more. We have a wide range of trusted products and companies featured! These coatings can be applied to optics up to 23″ in diameter, having various shapes and sizes, with either plano or curved surfaces. 12 Burbidge Road. The main equipments include Taiwan Longpian coating machine and Japanese design automatic development, integrated lens coating, lower mold production, tonic injection molding, IR production, IR fitting one-stop service. The end user sees not only a lot of light, but the correct color of light as well. I think in some cases if the lens has too much fungus people use a compound paste to clean the lens which may take off any lens coating before polishing it. I think it is worth a try. Leica group has more experience in this area than other camera groups so I hope its OK to ask . Fungus growing in camera lenses or binoculars - Fungus can grow on the coatings of lens elements or prisms in binoculars. - Shutter speeds or delayed action sticks (quite common), requires service and adjustments, sometimes a new main spring is needed. Then look at the glass from the side and check out where the spoon enters the water. Here two of the thin film coated lenses before I started the polishing: ULC provides a broad range of optical coating services, ranging from anti-reflection and protected or enhanced metal mirrors consisting of 1-9 layers, to dielectric polarizers and beam splitters consisting of 60+ layers. It is most likely that your spherical lens is aspherical after polishing - but not in the correct way to reduce spherical abberation :-) To order our Telescope Mirror re-coating service, please choose the correct process for your Primary Mirror size … Sand could do this very fast beacuse it is very hard! But scratches are normaly much deeper! On newer lenses, this AR coating is pretty hard. Furthermore the polishing fluid could get into the lens. SHIPPING We are servicing many film or digital camera lenses for customers that ship their equipment for repair. Tamron, Sigma, Fujifilm, Kodak, Polaroid, Cinestill, Vanguard, Tiffen, Westcott, Think Tank Photo, Black Rapid, and others. The vacuum deposition equipment is usually put into operation to coat many lenses at the same time, so you can not adjust the coating thickness and color one-by-one. over 175 years of combined professional service experience. The very earliest coated lenses bear no marking to indicate they are coated. Adjustment - Back focus, loosened elements. Images made with same exposure data (wideopen f/2.0) and same Lightroom settings. Surrey. The oil moves into the lens and coats the glass internal lens elements. Lens polishing during lens production is made with very exact bowls. The drill is fixed, and on high revolution speed. Even with metal its not easy. Attila Kun. Refraction! Please be careful! As polishing In the picture I used way too much of it. This light loss is not much, and an uncoated front lens is no cause for further reflections in the image - as long as one works without a front filter! Here is the modern lens with scratches on the front lens. For the real thing I disassembled the lens, in this case a Helios 44-2 58mm f/2.0. The application of lens coatings … But first some other more normal images made with the Helios 44-2 with DIY removed lens coating: What are the risks of lens AR coating removal? The lens is hard-coated. A.M. Technical Services. Last Update: Also, the multicoating isn't simply an application of "painted layers" which are removed easily. G5 offers complete lens elements, windows, and filters, as well as coating services on customer furnished material substrates, in both small or prototype quantities and high volume production. Assess the damage and determine if it is worth the risk of doing self-repair. Sand could do this very fast beacuse it is very hard! Rokinon XEEN CF 5-Lens Set $9,999.00. With this lens surface Canon Sumire Set Build-a-Set. The first coated glass elements appearing in the Zeiss cameras is the window covering the prism windows in the Contax II and III cameras. The drill is fixed, and on high revolution speed. And avoid polishing radioactive lenses - the fine radioactive dust would be very bad in your lung! Camera and Lens Repairs . The Leica Camera AG factory in Portugal was established in 1972 and employs a workforce of highly-skilled and experienced personnel. But this lens flares could be used for photography and video film! Here an image of the materials used - but with my first experiment lenses (dont work this way with assembled lens system) for scratch repair. Learn How to Clean and Avoid Camera Lens Fungus. Please visit my other photo Do It Yourself work, or my photo repair and modification directory with ~1700 DIY links to other photo tinkering sites. What Is a Lens Coating When Talking About Photography? We have been coating Primary Telescope mirrors for over 40 years. Here is the modern lens with scratches on the front lens. Lens polishing could also helf to remove fungus damage. But for older lenses in most cases no replacment parts are available. This tinkering could destroy your lens, and the machine drill or polishing machine could harm your health! You’ll suspect that Uri Geller has been messing with your flatware. Not the comparions image pairs, left the normal AR coated lens, left the lens with stripped AR coating. With this lens polishing I worked with an affixed drill and a sisal polishing wheel (for metal). Let's talk about the way that worked well: I e-mailed Zeiss Camera lens division concerning a damaged coating of the rear lens element of my C-Y 35 1.4. Yes! Portland Camera Service … On newer lenses, this AR coating is pretty hard. I don't think they re-coat, they just replace the part if they can.
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