Re: ProPhoto RGB or Adobe RGB 1998
Re: ProPhoto RGB or Adobe RGB 1998
- Subject: Re: ProPhoto RGB or Adobe RGB 1998
- From: bruce fraser <email@hidden>
- Date: Sun, 11 Jan 2004 14:07:48 -0800
For what it's worth, I've been using ProPhoto RGB for pretty much all
my work for about three years now.
You certainly aren't losing anything by staying in ProPhoto, and if
you're working in 16-bit, there's almost certainly no benefit to
converting to Adobe RGB as an intermediate step, and doing will
definitely clip some printable colors.
Also, don't assume that you need to use perceptual rendering. I find
that i prefer relcol+BPC on about 85% of images...
Bruce
At 1:14 AM -0800 1/11/04, Steve Upton wrote:
At 12:18 PM -0800 1/10/04, David B. Miller wrote:
Using PS CS's camera RAW I open my Canon EOS 10D images. I have
been choosing ProPhoto RGB. I keep everything in 16 bit. Then
the file is sent to my Epson 9600 with Ultrachrome inkset and matte
black ink.
My question is, what am I loosing, if anything in the final print,
by being in ProPhoto RGB the entire time? Should I save the RAW
file in Adobe RGB 1998 instead? I don't believe the Epson 9600 can
print the gamut of the ProPhoto RGB.
If your original image colors are outside of Adobe RGB then there
may be benefits from using ProPhoto RGB. At the moment there are no
perceptual intents that will map colors from camera or working space
profiles as you move to smaller spaces - excluding print profiles.
In other words when you move from camera/scanner profiles or large
working space profiles to smaller working spaces, colorimetric
intents are the only ones available - with the associated gamut
clipping...
So, there is a sound workflow in using large working spaces to
"normalize" out of larger gamut camera/scanner profiles. Then, leave
the gamut compression to the perceptual intent of the print profile.
Assuming the file is in 16 bits it may be the highest quality
workflow to use.
v4 profiles may help with more standardized perceptual mapping and
more support for perceptual tables out of device spaces...
--
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