![]() Center resolution is very good to excellent throughout the tested aperture range. “The Noctilux no doubt is an impressive lens, not just because of its size and weight. → Leica Noctilux-M 50mm f/0.95 ASPH review at Photozone: If you’re in love with your “corroded” M9, however, and want to see it brought back to health, LDP LLC is now offering to replace your oxidation-damaged ICF with a new properly-coated ICF for a fee of $1,500.→ Leica M 240 black and silver cameras are currently in stock at Amazon. On Semi recently decided to exit the CCD business entirely, forcing Leica to discontinue the M9 sensor replacement program last month and begin offering customers with flawed M9s credit toward a new camera instead. Kodak sold its image sensor business to the Platinum Equity-owned Truesense in 2011, and Platinum Equity sold the business to On Semi in 2014.Īfter the sensor corrosion issue made headlines, Leica offered free replacements of defective sensors for a time before it began charging $1,600 to do the replacement. Now maybe they later started adding coatings that later became defective, but at least for my camera (with the serial number handwritten inside of 66,643), the defect was caused by using unprotected glass.” “Not ‘corrosion’ that’s oxidization caused by a lack of protective coatings,” Llewellyn says. Llewellyn’s conclusion is that the “corrosion” Leica claims is due to a damaged coating layer is actually due to oxidation from having no coatings. Should this coating layer be damaged, corrosion effects that alter the filter surface may begin to appear after several years. The sensors are equipped with a specially coated IR filter cover glass to ensure optimum imaging performance. Here’s what Leica said about the corrosion back in 2014 after doing its own investigation: That Leica / Kodak would do that boggles the mind.” Variable include time, temperature, humidity, ozone, and even the particular glass melt, but you would never put uncoated BG or UG glass in a camera and not think that one day you are going to have a problem. “All those BG and UG types of glasses are susceptible to oxidization. “That filter doesn’t have coatings! Leica / Kodak used an uncoated Schott BG type glass! The coatings seal the glass. “What I found was a filter that extended down to 300nm,” Llewellyn writes. ![]() This is when he got his biggest surprise. Next, Llewellyn carefully removed the ICF/coverglass from the CCD sensor and used a spectrometer to analyze it. But then he found that the surface was actually pitted from oxidation, something he had never seen before. ![]() Llewellyn then used a synthetic sapphire 1 micron polish and was able to polish off most of the corrosion from the ICF. What the corrosion looks like under a microscope. The brown color seen around the CCD was due to prior sensor cleanings. The Leica M9 with a horribly corroded sensor. Maybe those pinholes where oxidizing over time, but that is still a curious thing because coatings don’t do that (at least I haven’t seen it).”Īfter finding a good condition Leica M9 with a horrible condition sensor, Llewellyn extracted the CCD and put it under a microscope. “One theory I thought of was that perhaps there were pinholes in the vapor deposition metallic coatings that are applied to the ICF. “Because Kodak liked to epoxy the ICF to the ceramic chip as the coverglass, maybe Leica couldn’t just change the ICF,” Llewellyn says. Llewellyn had never seen a sensor itself corrode in the manner Leica photographers were experiencing, so he decided to dig deeper into what was actually going on.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |