Archived posting to the Leica Users Group, 2010/12/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]My issue is that Leica chose to store the sensor characteristics in the main camera circuit board. I would have put them in the sensor assembly to avoid having the sensor assembly individually matched to the camera body. They might have saved one piece of non-volatile memory but it sure looks like it complicated the manufacturing and repair process. Possibly the most profiled sensors are those used in astronomical instruments, telescopes. Custom made and super expensive. Apparently the "raw" data from the M9 is pretty cooked ;-) Marty Deveney wrote: > On Wed, Dec 22, 2010 at 8:44 PM, Dennis <dennis at hale-pohaku.com> wrote: > >> I forgot that it seems that Leica characterizes each sensor and stores >> that >> data in the camera. Not in a way I would have done it though. >> > > The sensor is profiled and that data is in the camera in every digital > camera. What varies is how thoroughly or well it's done. For a lot > of my scientific work, we profile the sensor before each shot, and > they are grade 0 sensors (i.e. shown to have no flaws by repeated > testing), a lot better than even those that get put into large and > medium format camera for photographic purposes. > > >> The processor does have to make a jpg and write all the crap to the memory >> card and figure out exposure and, for the jpg, white balance. Plus more >> stuff. >> > > Even in a raw file, the processor and the firmware has to 'make' the RAW > file. > > Marty > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > >