OK. That being the case, how is adjusting the exposure of a .PEF file after the fact different than doing it in camera? I realize there *is a* difference because a .PEF file is not really raw, and obviously the sensor gain is out of the picture. What *is* the difference?
Maybe I don't really care about the technical details as long as the results are what I want.... Tom C. >From: Lawrence Kwan <[EMAIL PROTECTED]> >Reply-To: Pentax-Discuss Mail List <[email protected]> >To: Pentax-Discuss Mail List <[email protected]> >Subject: Re: Silly HDR Question >Date: Sat, 4 Nov 2006 14:36:57 -0500 (EST) > >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 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
