Quote:
Originally Posted by PRejto
I'm going to answer my own question thanks to a reply from Terry Platt at SX.
He pointed out that the well depth of the 694 Sony chip is basically half that of the 571 CMOS chip. Consequently the images from the 571 chip will look dimmer as the electrons are spread over a much larger dynamic range. Thus, the effective gain of the 571 is about 50% of the 694 chip with smaller wells.
This seems obvious in retrospect,, but it wasn't to me before asking!
Peter
SX seemingly has a 571 CMOS camera in testing....
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Also the pixel size of the 694 is 4.54µm while the 571 is 3.76µm. Approx 30% larger pixel collects more electrons and dumps them into that smaller well.
Chris