We’re happy to announce that we can now repair the Leica M9 sensor and replace it with corrosion resistant glass for $999. We’ve removed Leica coverglass before, but haven’t looked into this repair earlier since there was a warranty option through Leica. We found out about this recent news after a few customers emailed us asking about the repair. So we picked up an M9 with a corroded sensor, and gave it a shot. We were able to delaminate the corroded filter from the sensor, and replace it with BG60 glass. This glass will last indefinitely without oxidizing per Schott test reports, and also allows us to reduce the Leica sensor stack by 0.2mm, further improving on it’s excellent corner sharpness. We can also replace the glass with our full spectrum glass making it IR and UV compatible. Leica M9 Sensor Corrosion Repair - Kolari Vision Well. It seems like this camera has more life in it than I thought. The only thing I really don't like about it is the obnoxious shutter sound. Otherwise I could put up with the rest of its flaws.