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TIFF generated in Illustrator looks different in IM

Posted: 2015-05-07T00:37:21-07:00
by hobboy
I'm new to ImageMagick and have been working with Illustrator CS6, which I'm also new to. I've come across some discrepancies between the display colours in different programs, and I'm trying to work out what is causing these. For example, with the following TIFF (which I did not generate).

https://www.dropbox.com/s/19yqxbbhu66xg ... g.tif?dl=0

In programs such as Illustrator, paint.net and windows photo viewer I see different colours (darker greens, lighter browns and greys) to IM, IrfanView and GIMP. I had a look at whether there we alpha levels using 'identify -verbose' , because I read in a different post that Illustrator adds extra things to tiffs, but there doesn't seem to be any (correct me if I'm wrong).

Would anyone be able to help me identify what is causing these differences? I doubt it's very complicated :).

Re: TIFF generated in Illustrator looks different in IM

Posted: 2015-05-07T00:48:08-07:00
by snibgo
You have a CMYK file with embedded profile that a printer can print. To view on a screen, it must first be converted to sRGB. Printers have colours that screens can't show, and vice versa (they have different gamuts).

A good way of converting with IM is:

Code: Select all

convert 2.0-Ch-Fig-2.25-g.tif -profile sRGB.icc z.png
But you might prefer it with an "-intent", which controls the gamut behaviour.

Re: TIFF generated in Illustrator looks different in IM

Posted: 2015-05-12T04:03:37-07:00
by hobboy
Thanks for the pointer, I've now had more of a look into this and I've found the appropriate profiles for input and output :)

edit: input for different figures (since this has an embedded one!)