Re: 16 bits = 15 bits in Photoshop?
Re: 16 bits = 15 bits in Photoshop?
- Subject: Re: 16 bits = 15 bits in Photoshop?
- From: Graeme Gill <email@hidden>
- Date: Fri, 15 Apr 2005 08:18:51 +1000
- Organization: Argyll CMS
bruce fraser wrote:
What Dan's tedious and fundamentally specious arguments deliberately
miss is that the need for greater bit depth has absolutely nothing to do
with reproduction and everything to do with editability.
256 steps is probably sufficient for printing to reflective copy from a
tone-mapped 11-stop capture. It's nowhere near enough to work with
linear-gamma scene data that will be reproduced in a movie theater (even
an analog one), or to get optimal tone-mapping from a capture that
really holds the scene dynamic range and is displayed on one of the
above displays.
Sound to me like you are in furious agreement then.
Different situations have different requirements. If you are
capturing the real world and want to manipulate it, you
need headroom. If you've done all that and rendered to
a limited dynamic range medium like a reflective print or
CRT, then 8 bits in an appropriate colorspace is just enough.
Graeme Gill.
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