converting tif to png with -profile not working

[jedierikb]

ImageMagick 6.9.1-8 Q16 x86_64 2015-07-14

input:
http://alumni.media.mit.edu/~erikb/tmp/ ... front2.tif
output:
http://alumni.media.mit.edu/~erikb/tmp/rgb_exp/out2.png

When I run this:

Code: Select all

convert front2.tif -profile sRGB_IEC61966-2-1_black_scaled.icc out2.png

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convert: Incompatible type for "RichTIFFIPTC"; tag ignored. `TIFFFetchNormalTag' @ warning/tiff.c/TIFFWarnings/856.

The result is in garish colors I did not expect (or want). The same conversion within photoshop is what I expected, as seen here:
http://alumni.media.mit.edu/~erikb/tmp/ ... /pshop.png

What am I doing wrong with ImageMagick?

[fmw42]

Your tiff file is CMYK, but has no CMYK profile. To convert to sRGB when there is not CMYK profile in the input, you need to supply a CMYK profile as well as the sRGB profile. The following works fine for me on IM 6.9.1.8 Q16 Mac OSX

Code: Select all

convert front2.tif \
-profile /Users/fred/images/profiles/USWebCoatedSwop.icc \
-profile /Users/fred/images/profiles/sRGB.icc \
front2.png