On Fri, Oct 13, 2006 at 04:35:46PM -0400, Perry Pellechia wrote: > > Yes, I understand all about sampling, dynamic range and resolution. > In my field (NMR spectroscopy) the instrumentation typically uses 12 > or 16 bit ADCs. The four extra bits offer tremendous improvement in > dynamic range and fidelity. Adding another 6 bits would offer even > more improvements assuming what feeds the ADCs have enough dynamic > range and high signal to noise.
Precisely. And that isn't true for the K10D. According to some figures posted here (and elsewhere) there are at the most 2^17 electrons in a full well on the sensor (and that may be an over- estimate by a factor of 10 or more), and the signal-to-noise ratio probably isn't any better than 2^12. Using a 16-bit processor is reasonable, to avoid quantization noise when applying non-linear transforms such as gamma correction. But there's no added benefit in going to a 22-bit processor today. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
