On Sat, 4 Nov 2006, Tom C wrote: > If I take a RAW .PEF file and adjust exposure -1 and +1 stop, saving each as > another .PEF in Adobe Camera Raw, would that not for all intents and > purposes, be the same as having taken three separate exposures at -1/0/+1 ?
It is different. Adjusting the exposure in camera is similar to changing the ISO. Changing the ISO in camera is done at the A/D conversion stage. Some high ISO settings such as ISO 3200 for the D80 are exceptions. In this case, it was pure digital post-processing (and not done at A/D stage). That's why in D80, they called it Hi 1.0 setting instead of calling it ISO 3200, and not available in Auto ISO range. And you can achieve the same "ISO 3200" by taking the photos at ISO1600 with EV -1, and then adjusting the exposure +1 in the RAW files. So if you reach the limit of the ISO range, e.g. ISO 1600 in K10D, then the +1 in camera would be no different than the +1 in PEF file. -- --Lawrence [EMAIL PROTECTED] http://www.vex.net/~lawrence -- --Tungsten T3 Enhanced DIA Keyboard----Nokia Ringtone Convertor-- -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
