On 13/09/06, Thibouille <[EMAIL PROTECTED]> wrote: > You said exactly what I think :) > A sensor has no native ISO or whatever, it can be used as xxx -> xxxx > ISO because others settings would be unusable or unpractical but that > is NOT a function of the sensor. If Pentax wanted they could have > chosen to let 3200 ISO available.
It does of sorts, the native ISO will be the corresponding sensitivity at which a full well will produce a non-clipped analogue output. The gain setting simply matches the sensor to the ADC and obviously the adjoining components should be selected such that the sensor output never clips or exceeds the ADC input level for any assumed ISO/gain combination. > I do not think the 22bit thing is any magic. I mean that it is no > magic at all otherwise 3200 ISO would be available. It may still be. -- Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://home.swiftdsl.com.au/~distudio//publications/ Pentax user since 1986, PDMLer since 1998 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
