On Thu, Jun 15, 2006 at 02:09:02PM -0700, keith_w wrote: > > The image captured as a tiff or a jpeg is converted by the camera's internal > firmware (I suppose ?) to be what it is. Same with RAW. > > Any losses that occur to any image captured and saved happen after the photog > grabs hold of the image and messes around with it!
Not really. The original capture, as registered on the sensor, has 12-bit data. That level of precision is retained in a RAW file, but in a TIFF or JPEG low-order bits are thrown away. It's not quite as simple as saying "the bottom-most four bits are lost", because there are also some non-linear processing steps involved, but there is no way to store twelve bits of information in only eight bits. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
