Re: 48 bit data into Photoshop
Re: 48 bit data into Photoshop
- Subject: Re: 48 bit data into Photoshop
- From: Chris Cox <email@hidden>
- Date: Wed, 25 Jul 2001 22:16:25 -0700
At 10:01 PM -0700 7/23/01, email@hidden wrote:
Message: 3
Date: Mon, 23 Jul 2001 09:22:23 -0400
From: email@hidden (Scott Kilbourne)
To: email@hidden
Subject: 48 bit data into Photoshop
Silverfast has the option to use "48 bit HDR" data to bring into
Photoshop from scanners. The resulting PS histogram has the whites
clipped off
(24 bit version from Silverfast is OK). In sampling the 48 bit data
in PS, Photoshop shows RGB of 255,255,255 or lesser values, nothing
above
255. 0-255 is only 8 bits worth of data per color. Silverfast says
the Photoshop has a bug in bringing in 48 bit data and the 48 bit
HDR that
they make is intended for the optional Silverfast module that
creates and applies profiles to the 48 bit HDR data and then exports
finished 24
bit data to PS.
Can you get good 48 bit data into PS 6? We'd like to run profile
the scanner in 48 bit and apply the profile on the way into PS, but
the 48 bit
data is slightly truncated at the white point.
Comments?
Photoshop has no problem dealing with 48 bit RGB, 64 bit CMYK, 48 bit
LAB, or 16 bit Grayscale....
Silverfast is blowing smoke and trying to cover up their own bugs.
Chris