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Topic: Pitstop 2017 (Read 325 times) previous topic - next topic

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Re: Pitstop 2017
Reply #15
Why is removing RGB profiles bad

RGB and CMYK colour modes are just values/numbers. They are "device dependent" - it depends on which physical device and on which ICC profile is coupled with the values/numbers on the actual perceived colour that is produced:

http://prepression.blogspot.com.au/2014/06/rgb-icc-profile-roulette.html


and what is object level ICC?

In a PDF file, objects can have an ICC profile associated with them (vectors, text, rasters) - and in the case of PDF standards, the entire document can also have an "output intent" ICC profile set.

DeviceLink profile conversions in PitStop can't be performed on objects that contain an ICC profile, they only work on "device" colours (PDF talk for untagged, no object level ICC profile).

So if one must remove ICC tags to run a DeviceLink Profile, and for example the profile is CMYK > CMYK, there is no benefit for also removing RGB ICC profiles.