In the picture I used way too much of it. Not the comparions image pairs, left the normal AR coated lens, left the lens with stripped AR coating. This is NOT the correct way of working. © 20.07.2013 Markus Keinath | Home | Impressum & Rechtliches. Learn How to Clean and Avoid Camera Lens Fungus. Lens polishing during lens production is made with very exact bowls. Sand could do this very fast beacuse it is very hard! 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. I worked with an affixed drill and a sisal polishing wheel (for metal). It seems the exact description is not polishing but buffing. abrasive I used Nigrin glass polish, made for car windows. This tinkering could destroy your lens, and the machine drill or polishing machine could harm your health! Element Replacement - Weathered, scratched, cracked, or damaged coating. I don't think they re-coat, they just replace the part if they can. I doubt you'd be willing to pay for re-coating that lens element. SHIPPING We are servicing many film or digital camera lenses for customers that ship their equipment for repair. 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. 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. We included some packaging tips, Address Label and Shipping Form for your convenience.. Proprietor: Alan Marlow (HTEC Mech /Prod eng.) For the first test of this method I used the lens complete without disassembly. Most likely this lens works better for infrared photography, probably it even is better for ultraviolett photography. With this lens polishing 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. But this lens flares could be used for photography and video film! As polishing Leica group has more experience in this area than other camera groups so I hope its OK to ask . The oil moves into the lens and coats the glass internal lens elements. I e-mailed Zeiss Camera lens division concerning a damaged coating of the rear lens element of my C-Y 35 1.4. 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. But for older lenses in most cases no replacment parts are available. 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. Even with metal its not easy. The lens is hard-coated. I have seen a guy named Hans Kerensky on Flickr do a lot of camera work and he may be of help. 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! I worked with an affixed drill and a sisal polishing wheel (for metal). 20.10.2013 The lens without the coating transmitts more red light - warmer colors are a results. 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: For the majority of lenses this is done on a "production line" of sorts. I think sometimes the glass itself might be softer - which results in a very high risk to change the lens surface shape. Please don´t remove the anti reflection coating from rare lenses - this would reduce their value extremely. The Leica Camera AG factory in Portugal was established in 1972 and employs a workforce of highly-skilled and experienced personnel. During production, normal camera lenses obtain a very accurate curvature, let's say a surface accuracy of about 130nm. 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. Here I have adjusted exposure in Lightroom RAW development, the bright cloud right side in the background has now about the same brightness. The lens is hard-coated. Prior to coating, all optics are either cleaned in one of our … A lens full of oil coated elements will not focus precisely nor will it render colors as it was designed to do. When handled incorrectly, that will remove the lens coating altogether and damage the lens even more. Does anyone have any experience they would like to share about recoating a lens element? This is NOT the correct way of working. For the real thing I disassembled the lens, in this case a Helios 44-2 58mm f/2.0. We have been coating Primary Telescope mirrors for over 40 years. Surrey. Especially for AF and zoom constructions the mechanical force applied Last Update: The application of lens coatings … Furthermore the polishing fluid could get into the lens. I have done some earlier experiments, but they failed. Any changes to the production flow are costly. This Russian made lens is common and cheap, and easy to disassemble and reassemble afterwards. scratches could be removed, and scratches are several micrometer thick - so the lens form tolerance is destroyed! Last Update: The first coated glass elements appearing in the Zeiss cameras is the window covering the prism windows in the Contax II and III cameras. Shepperton. On newer lenses, this AR coating is pretty hard. We offer single lens coating. Also, the multicoating isn't simply an application of "painted layers" which are removed easily. We have a wide range of trusted products and companies featured! Shadows in the image made with the lens with removed anti-reflection coating are less dark - due to more internal reflections - contrast reduction. . The end user sees not only a lot of light, but the correct color of light as well. The bending is what a camera lens is all about—it’s how the lens forms an image. Owner of new lenses most likely try to exchange the scratched lens element with a new one. By far simpler to exchange that one suspect lens element for a new … A.M. Technical Services. Here an image of the materials used - but with my first experiment lenses (dont work this way with assembled lens system) for scratch repair. TW17 0ED ( Established 1988 ) Tel: 01932 247127. And avoid polishing radioactive lenses - the fine radioactive dust would be very bad in your lung! But this lens flares could be used for photography and video film! I think it is worth a try. Is this possible, how can this be done? Lens polishing could also helf to remove fungus damage. . Lens Repairs, Camera Repairs, Digital SLR Repairs, AF Lenses, established 30 years. Here two of the thin film coated lenses before I started the polishing: - Shutter speeds or delayed action sticks (quite common), requires service and adjustments, sometimes a new main spring is needed. 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. Lens fungus will rear its ugly head when moisture gets trapped inside the lens. 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? 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 … Supreme Prime Lens Set Build-a-Set. With this lens surface Prontor shutter cameras - Agfa, Ilford, Voigtlander etc. I think sometimes the glass itself might be softer - which results in a very high risk to change the lens surface shape. But scratches are normaly much deeper! Please be careful! I am interested in hearing people's experience on having an old coating removed and a new coating applied. E-mail: alanmarlow1000@gmail.com . It is most likely that your spherical lens is aspherical after polishing - but not in the correct way to reduce spherical abberation :-) polishing we remove the lens antireflection coating. The anti reflection coating is very strong, and it is not easy to get such scratches! The coated lens has a higher licht transmission, the image is brighter. Re-lubrication - For those lenses that aren't as smooth as they should be. 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. 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. Mob/Txt: 07914 978105 . 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 … 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. By . All much deeper than the estimated surface quality of a lens. 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. 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. Fill a glass with water and stick a spoon in it. Scratches in lenses seem to be a big problem for some photographers - but normaly a short scratch will not be visible in the image. This lens has no longer an antireflection coating on the front lens - this results in ~4% less transmission for This tinkering could destroy your lens, and the machine drill or polishing machine could harm your health! 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. The scattered light from the scratch might be measured as a somewhat smaller contrast. To order our Telescope Mirror re-coating service, please choose the correct process for your Primary Mirror size … You’ll suspect that Uri Geller has been messing with your flatware. Recherche la meilleure sélection air lentille de fabricants ainsi que les produits de qualité supérieure sur air lentille alibaba.com They have a layer of lens coating that will enhance the optical quality and protect the glass from damage. During production, normal camera … Sale. 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. The very earliest coated lenses bear no marking to indicate they are coated. This oil is also food for mold. Rokinon XEEN CF 5-Lens Set $9,999.00. In the US I have heard Paul Ebel lens service is good and in Europe I am not sure. 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 … Even with metal its not easy. Mechanical - W orn cam drives or helicoils, iris repair. Yes! this way could damage the lens! 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. On newer lenses, this AR coating is pretty hard. The anti reflection coating is very strong, and it is not easy to get such scratches! I decided to strip all lens surfaces coating, exept between the glued lens groups. The drill is fixed, and on high revolution speed. abrasive I used Nigrin glass polish, made for car windows. 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. Refraction! https://www.ducloslenses.com/pages/glass-polishing-recoating 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. Sigma Cine Lens Set Build-a-Set. What lens fungus does is cause cloudy patterns to form on the lens. And avoid polishing radioactive lenses - the fine radioactive dust would be very bad in your lung! And mat looking surfaces have probably less than 2µm depth. Coated lenses started with the 50mm f.1.5 Sonnar. Alan Marlow Service and Repair. perpendicular light rays, for oblique rays even less transmission. deep. We offer the following lens services: Reconditioning - Brings your lens to function as if it were new. FLORIAN Ratzinger Let's talk about the way that worked well: 19.10.2013 © 20.07.2013 Markus Keinath | Home | Impressum & Rechtliches. These coatings can be applied to optics up to 23″ in diameter, having various shapes and sizes, with either plano or curved surfaces. Our service team has more than 20 years’ optical experience. It seems the exact description is not polishing but buffing. For the first test of this method I used the lens complete without disassembly. They said they could do nothing because no more spare parts are available. So, are there other problems with polishing the lens? It is most likely that your spherical lens is aspherical after polishing - but not in the correct way to reduce spherical abberation :-) Another example. Then look at the glass from the side and check out where the spoon enters the water. M. mineralcollector New Member. over 175 years of combined professional service experience. Zeiss invented lens coating prior to World War II and it was kept as a military secret until after the war. At the same time, we use advanced vacuum coating technology. Here is the modern lens with scratches on the front lens. Especially for AF and zoom constructions the mechanical force applied this way could damage the lens…
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