Some sensors handle the boost much better than others, and the choices in processing made by the manufacturer, (as well as hardware), can affect the output in pleasant or unpleasant ways.
Toralf Lund wrote: > Paul Stenquist wrote: > >> In truth, the K20D is an excellent high ISO performer, [ ... ] >> > I've been meaning to ask some questions about this for a long time, > since it doesn't really make sense to me when people say that a certain > camera is has a good high ISO performance. I mean, doesn't the ISO > setting just multiply the signal? Shouldn't that mean that the > performance is exactly as good, relatively speaking, at high ISO values > as it is at low ones (and vice versa)? Or is what people really mean > that the noise under low-light conditions is better controlled > (regardless of the ISO setting as such)? Or does the sensor actually > have an improved dynamic range that doesn't show up at lower ISOs > because the A/D cuts of part of the signal? Is this what "extended > dynamic range" is all about? Or, alternatively, is everyone merely > talking about the quality of the built-in image enhancement software (in > which case I'm not really interested..)? > > Just thought I might mention it, since the subject was brought up yet > again... > > - Toralf > > > > -- Vote for Cthulhu. Why settle for a lesser evil... -- Dr. Jerry Pournelle -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
