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[filmscanners] RE: Compression >> Wide range digitalcameras
Tony,
> CCD sensors
> can now achieve 14 stops range,
What full frame imaging CCD sensors do that in a "normal" camera? There are
some that if you actively cool them, and control their environment, you
might get that kind of response from them...but that's not really a usable
device for a 35mm-esque type camera.
The Kodak one I am working with right now, and was just announced three
months ago, is only good for 72dB, which is 12 bits. And of those 12 bits,
really only 11 are good "most" of the time... Also, that 72dB is over the
entire range of the sensor...(noise level of 21e' to a saturation level of
94K e', which is where the 72dB comes from)...so you never really get the
whole range, except in very controlled situations.
Austin
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