Archived posting to the Leica Users Group, 2010/09/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I spend a lot of time with our microscope camera backs, but have less experience with MF digital backs that are for regular photography. All MF backs that I have seen just leave the sensor bare and waving about in the breeze. The S2 has an advantage there. But dust is not dust. I've spent a lot of time looking at my M8 sensor with a microscope figuring out why some dust will shift and other dust will not. Iron rich dirt dust and strongly covalent dust types hold onto a sensor MUCH tighter than ash, human skin flakes and other gunk that does not bond tightly to charged surfaces. I though that the digital Hassy's have an electrical system that de-charges the sensor when you turn them off. Not sure if the S2 does. The problem for me with large sensors has been that unless you can cover whole whole sensor with one swipe you have the additional problem of mobilised dust etc that then re-dries at the edges of the swipe. This is even harder to shift than regular, fell-out-of-the-air dust. It's almost as frustrating as spotting prints back in the old days. Marty