On Aug 24, 2005, at 9:29 AM, Shel Belinkoff wrote:
Does anyone have an idea how the B&W filter in the istDS2 might
work? The
various Sony cameras I've used allows for B&W, but the results seem
to be
little more than desaturated RGB - in fact, the files show up as
RGB type
files when edited in PS, and the B&W results aren't particularly good,
showing a rather poor tonality and range. Are there different ways of
generating a B&W photo with digi cameras? Might the B&W results in the
istDS2 be RAW files, or something other? I realize all this may
require
some speculation ...
The DS body has the same B&W rendering filter as the DS2. It is only
functional when you store the original capture in JPEG format, it
can't convert RAW format files to B&W, and it generates a new JPEG
file with the B&W rendering. It is the equivalent of using the
Channel Mixer in Photoshop with the settings at R=34%, G=55%, B=13%,
as demonstrated by the following example photo:
original capture in RGB:
http://homepage.mac.com/godders/_IGP0267.jpg
composite of original with Channel mixer and in-camera B&W rendering:
http://homepage.mac.com/godders/DS-BW-rendering-test.jpg
The image and histogram on the right was converted in-camera to B&W
and is named _IGP0268.JPG. The image and histogram on the left is the
original color RGB image, _IGP0267.JPG, with a Channel Mixer
adjustment layer, settings show in the dialog box in the center.
Godfrey
