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Author Topic: Ok to select "Gamut Warning" checkbox in PS print preview? For CMYK press?  (Read 366 times)
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« on: April 24, 2013, 11:49:10 AM »

In the Photoshop Print-Preview dialog for CS4/5/6, there is a check-box for:
[] Gamut Warning
along with "Match Print Colors" and "Show Paper White"

My understanding is that the "Gamut Warning" provides a very simplified "soft proofing" capability just before printing, to show what colors are outside the printer printer profile being used when "Photoshop Manages Colors".

However ... in the Scott Kelby book, " Adobe Photoshop CS6 Book for Digital Photographers" on page 372, there is the statement:
"TIP: The Gamut Warning Isn't for Us
The Gamut Warning checkbox (beneath the preview area) is not designed for use when printing to a color inkjet (like we are here) or any other RGB printer. It warns you if colors are outside the printable range for a CMYK printing press, so unless you are outputting to a printing press, you can leave this turned off."

Is the above statement correct?

If not, is my understanding (above the quote) more or less correct? Or flawed?

retired in Colorado Springs, CO, USA ... hobby'ist with mostly Canon gear ... let me know if you're in the area and would like a free guided tour of our photographically "target-rich environment"
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« Reply #1 on: April 24, 2013, 02:27:05 PM »

The gamut warning is based on the profile you setup in Customize Proof (soft proof) so Scott's wrong. If he had the default set for CMYK, that be used. Since Scott doesn't soft proof or understand the relationship here, let's move on.

The overlay isn't useful IMHO. It predates Photoshop 5 when ICC profiles and actual soft proofing was introduced. You get to see an ugly overlay of colors that may be 1% or 100% OOG. Now what?

Setup a good soft proof and look at what happens when you toggle the rendering intent with the profile. That's going to show you a lot more useful information about your image than an ugly overlay. Which BTW isn't accurate! Convert an image into sRGB, then set sRGB as the soft proof, turn on the overlay. You shouldn’t see any. But with some images, you do.

In the Print dialog, the profile you select is used for the OOG overlay and soft proof (of course).
« Last Edit: April 24, 2013, 02:29:37 PM by digitaldog » Logged

Andrew Rodney
Author “Color Management for Photographers”
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