On Sat, Oct 14, 2006 at 11:50:41AM -0700, Joseph Tainter wrote: > On 14/10/06, J. C. O'Connell <[EMAIL PROTECTED]> wrote: > > But isnt the Raw capture still only 12 bits > > And arent most serious users only shooting raw > > Mode? > > The image capture in camera is 22 bits wide, the pixel data is then > subjected to gamma transforms, black point adjustment, colour channel > gain adjustment and normalization (possibly) and is then output as a > 12 bit per pixel RAW file. > > -- > Rob Studdert > > ----- > > Rob, if I shoot only in RAW, is the 22 bit converter giving me anything?
Maybe. I haven't pulled apart a PEF (or DNG) from the K10D, but it's possible that there is a transform (gamma correction and/or tone curve) applied to the data in the analog domain prior to A-to-D conversion, or in a post-conversion digital stage before truncation to 12 bits. The practical result would be a significant reduction in shadow noise. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
