Computer Graphics with Photoshop

Author

Color Settings

No Where Man

2004-01-24, 1:28 am

I'm trying to fine-tune my settings in order to produce the best color, and
would appreciate any input.

For Color Settings, I've seletected the U.S> Prepress defaults. Color
Management Policies are set to "Preserve Embeded Profiles". FYI, I have the
Nikon D100, which is set to Nikon's version of Adobe RGB.

My printer is an Epson Stylus Photo 925. Under "Print with Preview", the
Print Space is set to Stylus Photo 925, and whatever particular paper I'm
using (usually Epson's glossy photo paper). Intent set to perceptual.

I'm finding that if I change the document's source space from the imbedded
profile - Nikon Adobe RGB (i.e. choose Convert Profile), to the Color
Settings profile - Adobe RGB - I get better colors. Leaving the documents
source space as is produces a slight green/blue cast.

Is it recommended (i.e. would it be a good idea) to change the Color
Management Policies to "Convert to Working RGB"?

Thanx!

Flycaster

2004-01-24, 3:28 pm

"No Where Man" <nowhere@noman.com> wrote in message
news:rImQb.2364$KU5.1176@nwrddc02.gnilink.net...

quote:

> I'm trying to fine-tune my settings in order to produce the best color,

and

quote:

> would appreciate any input.
>
> For Color Settings, I've seletected the U.S> Prepress defaults. Color
> Management Policies are set to "Preserve Embeded Profiles". FYI, I have

the

quote:

> Nikon D100, which is set to Nikon's version of Adobe RGB.
>
> My printer is an Epson Stylus Photo 925. Under "Print with Preview", the
> Print Space is set to Stylus Photo 925, and whatever particular paper I'm
> using (usually Epson's glossy photo paper). Intent set to perceptual.
>
> I'm finding that if I change the document's source space from the imbedded
> profile - Nikon Adobe RGB (i.e. choose Convert Profile), to the Color
> Settings profile - Adobe RGB - I get better colors. Leaving the documents
> source space as is produces a slight green/blue cast.
>
> Is it recommended (i.e. would it be a good idea) to change the Color
> Management Policies to "Convert to Working RGB"?

You've got the ideal situation. Your file is coming in tagged (which tells
PS how to interpret the color) in a device color space that "matches" your
camera. Very cool.

Usually (I'm making an assumption here because I'm unfamiliar with that
camera) a device color space, though accurate, is not "grey balanced" nor
does it have a uniform gamma. In other words, if you use it as a "working
space", changes you make will not result in uniform and color balanced
changes in other areas of the image. Rather, what you want to do is to
convert it immediately upon bring it in to one of the regular "working
spaces" which *are* "grey balanced" and do have a uniform gamma ~ in your
case, to AdobeRGB98.

Think of your profile as a "capture space" and AdobeRGB98 as the master
"working space", and finally your printer profile as the "destination
space." Convert when opening, and then archive your master files as PSD's
in AdobeRGB98, and convert only when printing to the printer space. Simple
stuff.

Good luck.

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No Where Man

2004-01-25, 7:28 pm

Flycaster -

Thanks for the response and info/advice. I've printed a couple more
pictures using this, and am producing consistant results. Whew!