Re: 16 bits = 15 bits in Photoshop?
Re: 16 bits = 15 bits in Photoshop?
- Subject: Re: 16 bits = 15 bits in Photoshop?
- From: Andrew Rodney <email@hidden>
- Date: Wed, 13 Apr 2005 07:05:39 -0600
On 4/13/05 2:03 AM, "Marco Ugolini" wrote:
> So, the question is:
> Is the 16-bit mode in Photoshop CS 1 really 15 bits? And is this still the
> case in Photoshop CS 2?
I saved this from a post by Chris Cox (this was in reference to CS, I assume
it's still true in CS2):
The high-bit representation in Photoshop has always been "15 1" bits
(32767 (which is the total number of values that can be represented by 15
bits of precision) 1). This requires 16 bits of data to represent is
called "16 bit". It is not an arbitrary decision on how to display this
data, it is displaying an exact representation of the exact data Photoshop
is using, just as 0-255 is displayed for 8 bit files.
Andrew Rodney
http://digitaldog.net/
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