The CCD has one sensitivity level. In the case of the K10D, that base ISO is 100. Any change from 100 is done in firmware/software through signal and image enhancement (?) or degradation (?). Within a narrow range, the process works well. Not too different from "pushing" film during the development process as far as you dare, then adjusting for the still-too-thin negative during the printing process. But if you try to push B&W film or a CCD output signal too far, you start to exceed the limits of the material and "noise" is introduced like the dreaded blue bands that some so loath and fear.
Stan On Jan 6, 2007, at 2:32 PM, Feroze wrote: > They had K10 review in that issue and stated this: " CCD sensitivity is > 100 - 1600, but we have information that future firmware update will > change that range to 50 - 3200" ! > > Forgive my ignorance, but how is it that a firmware upgrade can allow > that, is there no hardware involved.... > > Feroze > > Thibouille wrote: >> http://forums.dpreview.com/forums/read.asp?forum=1036&message=21555257 >> >> Rumours only of course ... but cool nonetheless... >> >> > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
