Archived posting to the Leica Users Group, 2020/09/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> > There is a report on Petapixel that claims a very different cause for the > replaced sensors..... Very different to what? Leica always said that the sensors corroded, they just never stated explicitly that the glass sensor cover was not coated at all. The phrase "delamination" has been used a lot, but not be Leica, but as far as I can tell "delimination" is not what happens. I have never seen a delaminated M9 or MM sensor - the ones I have seen had epoxy failure and the cover fell off, or the glass corroded. The spectral response of the camera makes it almost certain that Leica used Schott S8612 for the coverglass: https://shop.schott.com/advanced_optics/Products/Optical-Filter-Glass/Matt-Filter-Plates/Bandpass-%28NIR-cut-2%29/S8612/c/matt-plate/glass-S8612 - Schott's data sheet for this glass states clearly that it corrodes if you expose it to the environment. Maybe Leica didn't figure how quickly, or badly. But, as they say, mistakes happen. The Petapixal article is a re-quote/use of: https://www.maxmax.com/maincamerapage/monochrome-cameras/leica-m9 Last week I bought an M9 for $US425 with a highly corroded sensor: http://gallery.leica-users.org/v/freakscene/Randomness/IMG_3206.JPG.html on which I plan to try to replace the coverglass myself. If I fail I'll send it to MaxMax for repair. Marty On Thu, Sep 17, 2020 at 1:10 PM Frank Filippone via LUG <lug at leica-users.org> wrote: > I have had the sensor in my M9 and Monochrom replaced. The M9 filter > fell off, The Monochrom had sensor corrosion. > > There is a report on Petapixel that claims a very different cause for > the replaced sensors..... > > It bears reading.... > > > https://petapixel.com/2020/09/12/leica-m9-sensor-corrosion-due-to-dumb-design-decision-report-claims/ > > -- > > *Frank Filippone* > > *BMWRed735i at Gmail.com* > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information