> or no 3200 at all. And I do not think ISO is a function of the sensor. > IMO (but I do not know much, I'm only guessing) the sensor "works" the > same way whatever the ISO you choose, the difference is processing, > later. > As far as I know, it simply a question of an amplification of the signal from the sensor - by an increasing amount for higher ISO settings. The problem is that the noise gets amplified, too, and with a higher pixel-density, the signal will be weaker to begin with, so you have to amplify it more, which in turn leads to more amplification of the noise (which will not be much lower than on the 6MP sensor, unless they have been able to reduce it through a major redesign.)
Did that make sense? This has been mentioned approximately two and a half zillion times, before, of course. > After all everybody (rumours et all) say that low noise at high ISO is > thanks to this 22bit A/D converter. So ... ? > I'm with Godfrey on this one. I don't think more bits can change the actual noise characteristics. The 22 bit processor probably includes non-linear processing steps, though, so it will probably look different, if you know what I'm saying... - T -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
