[Alt-photo] Color Profile

Globe Trotteur unglobetrotteur at hotmail.com
Fri Feb 9 23:07:40 UTC 2018

Chris, Niranja, thank you very much for your input. I also did some research on the internet and found out that using AdobeRGB instead of Srgb on glossy paper makes the print duller. I am not too sure about that.
I am going to learn on how to do soft proofing in photoshop to see if i have any out of range colors when i print my color density palette.
My colorized color is in the orange (Like my safe light). So if i get Niranjan saying, adobeRGB will not benefit me.
I personally think that my printer will print best in srgb but was still wondering.
Yes Chris, i still use a 2200. I have a ink waste tank so i do not flood my pads and can reset the printer with a utility in case it tells me i have filled them. I also have a continuous ink system so i refill my tanks. It has been very good to me and hope it will last a little longer. I still do a test pattern every week to be sure the nozzles are not clogged.
Thank you again for your input
From: Alt-photo-process-list <alt-photo-process-list-bounces at lists.altphotolist.org> on behalf of Niranjan Patel via Alt-photo-process-list <alt-photo-process-list at lists.altphotolist.org>
Sent: Friday, February 9, 2018 4:21 AM
To: alt-photo-process-list at lists.altphotolist.org
Subject: Re: [Alt-photo] Color Profile

My thoughts...

I think the answer will depend on where in the color gamut of sRGB your current colorized negative lies in comparison to that of  AdodeRGB.  If the current colorized negative is safely within the sRGB color gamut, then it is unlikely that converting to the AdobeRGB will make any major difference, the former being a subset of the latter.  You can check with soft-proofing in Photoshop with out-of-gamut option checked. That will show you if there are any part of the file that are outside of the sRGB gamut.

The role of the printer makes it even more complicated.  If the file has any colors that are out-of -gamut of the printer/ink/paper profile, those colors are re-mapped according to the rendering intent selected before printing - perceptual, relative colorimetric etc.  This can also be simulated using the soft-proofing function in Photoshop.

As far as whether you will find better blocking color using AdobeRGB, I think you can figure out only by doing side-by-side comparisons.  The most significant boost in the gamut for AdobeRGB is in the green region with the blue and red regions nearly the same as sRGB.  If your current blocking color is right at the edge of the green apex of the sRGB or beyond it, I would say there is a possibility that going to Adobe RGB might get you an added space of color to explore.  Once again the final say will be that of the printer whether or not those digital differences are translated into actual spectral change on the transparency.

My general sense is the most important thing is to be consistent in using the same color space (as well as all the rest of the printing parameters) as the one that is used to arrive at the the optimum blocking color as well as the process correction curve.  You might get a secondary benefit by using lager color gamut, but of what magnitude is an open question.


      From: Globe Trotteur via Alt-photo-process-list <alt-photo-process-list at lists.altphotolist.org>
 To: "alt-photo-process-list at lists.altphotolist.org" <alt-photo-process-list at lists.altphotolist.org>
 Sent: Thursday, February 8, 2018 8:56 AM
 Subject: [Alt-photo] Color Profile

I do colorized negative with my silver printing. I also use SRGB color profile when I print. Is there any advantages to use Adobe RGB instead ? Would I find a better color to block the light using this profile ?
I use an Epson 2200.

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