Re: What to do if a CMYK image has no profile?
Re: What to do if a CMYK image has no profile?
- Subject: Re: What to do if a CMYK image has no profile?
- From: Ben Goren <email@hidden>
- Date: Thu, 07 Jan 2016 17:07:02 -0700
On Jan 7, 2016, at 4:42 PM, Roger Breton <email@hidden> wrote:
>
> I don't believe images can be managed without ICC profiles in Photoshop?
>
> When you view images in Photoshop, there is *always* one profile implicitely or explicitely assigned to the image.
Indeed, the very idea of a CYMK or RGB image without a profile is as meaningless as a length without units. How long is your paper? 17? 17 _what?_ Inches, centimeters, feet, smoots?
At the very least, you need the absolute values of the primaries and a not-miserable guess of a gamma (or equivalent) curve. Get that much right and it’s “close enough” for everything but critical work.
Lacking that...you’re down to one of two options. Arbitrarily assign a least-insane default (region-specific CMYK such as SWOP or FOGRA or whatever, sRGB for RGB)...or start by such an assignment and then start fiddling around with sliders until you’re less unhappy with what you see than when you started.
b&
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