Paul--
Scanner scan red, green and blue at a certain bit depth. Some Nikon scanners
scan at 12 bits per channel. However, a lot of software can't handle more
than 8 bits per channel (8x3=24 bits). When they can handle more, they
usually require 16 bits per channel (16x3=48 bits). So the Nikon
Jack writes ...
...
Nikon scanner scans at 12 bits (12x3=36) and if you
want the extra bit depth it stores at 16 bits (48 bits).
So the file size increases by 100% (if it is a tif for
example) while information increases by 50%. ...
I have to ask what you are calling "information"?
In a message dated 2/5/2001 3:48:57 PM EST, [EMAIL PROTECTED] writes:
So the Nikon scanner
scans at 12 bits (12x3=36) and if you want the extra bit depth it stores at
16 bits (48 bits). So the file size increases by 100% (if it is a tif for
example) while information increases by 50%.
format
using 36MB or a 100% increase in size. Maybe I shouldn't have used
information?
Jack Phipps
Applied Science Fiction
-Original Message-
From: shAf [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 05, 2001 3:50 PM
To: [EMAIL PROTECTED]
Subject: RE: filmscanners: Re: bit depth
Paul Patton writes ...
I've just been reading some Nikon literature about their new
scanners, and
I have some questions about the terminology. The ad states that the
coolscan IV ED yeilds 48 bit images (48 bits per pixel?). Later, it
states that the scanner has a color bit depth of 24 or
om: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of patton paul
Sent: Friday, February 02, 2001 12:14 AM
To: [EMAIL PROTECTED]
Subject: filmscanners: Re: bit depth and dynamic range
I've just been reading some Nikon literature about their new scanners, and
I have some questions about the
PROTECTED]]
Sent: Friday, February 02, 2001 8:19 AM
To: [EMAIL PROTECTED]
Subject: RE: filmscanners: Re: bit depth and dynamic range
Paul,
"Dynamic range," typically refers to tonal range or the contrast range that
the scanner can capture. 3.6 is considered very good for a CDD ( or is
