Eyedropper picks wrong CMYK colors from image's RGB preview in CMYK document
I observe that AI's eyedropper picks color not directly from a raster image, but from it's preview, but I think it's terribly wrong, especially when you pick a color from a CMYK image placed inside of a CMYK document, and get some mutated color instead of ground truth.
For example, I have a photo blended into a single colored background and I don't remember which one exactly. I pick this color with the eyedropper inside AI to match the image’s edge with the vector background ...and it almost looks OK, but when it's printed, the mismatch is quite visible.
Other people, whose designs I dissect quite often, seem to forget or more likely don't know about AI picking colors (because it's not natural), and if I don't find it, I got all the blame.
AdminEgor Chistyakov
(Admin, Adobe Illustrator)
shared this idea
Hi,
Thanks for reporting this issue.
We are able to reproduce this issue and investigating this further.
Regards
Ankit Goyal
Illustrator Team
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Ton commented
Same problem, I would suggest to merge them.
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A related report:
Eyedropper picks wrong color from linked images compared to embedded ones
http://illustrator.uservoice.com/forums/601447/suggestions/36903451 -
A related report:
Eyedropper picks wrong CMYK colors from image's RGB preview in CMYK document
http://illustrator.uservoice.com/forums/601447/suggestions/20480254 -
Anonymous commented
If you have two same images. one is linked and one is embedded and you use eye dropper to same area of each.. the colour it picks will be different.. this should be fixed
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Sergey Pivovarov
commented
I can also add that in Illustrator the eyedropper tool does not work correctly with RGB bitmaps in RGB documents as well (
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Simon Bowland
commented
Hi Ankit - I reported this issue myself back in November 2020. Sent test files and a video of the problem to Rama but he was unable to reproduce. To get an accurate colour pick, I have to open the raster image in Photoshop, use the colour picker in Photoshop, note down the CMYK reference, and then create that colour manually in Illustrator.
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Darryn Rogers
commented
Sampling a colour in a bitmap placed in Illustrator does not sample the correct colour value if the bitmap is placed using the "Link" option.
If the bitmap is placed with the "Link" option switched off ie embedded the the colours are sampled correctly.
I have attached a reference image which shows a placed, linked file in an Illustrator document. The squares at the bottom are colours created in Photoshop with their colour values indicated. The circles at the top are vector objects in illustrator with the colour values as the eyedropper tool sampled them.
Windows 10
Illustrator 2020 -
Darryn Rogers
commented
Sampling a colour in a bitmap placed in Illustrator does not sample the correct colour value if the bitmap is placed using the "Link" option.
If the bitmap is placed with the "Link" option switched off ie embedded the the colours are sampled correctly.
I have attached a reference image which shows a placed, linked file in an Illustrator document. The squares at the bottom are colours created in Photoshop with their colour values indicated. The circles at the top are vector objects in illustrator with the colour values as the eyedropper tool sampled them.
Windows 10
Illustrator 2020 -
Barak Vinner
commented
When sampling color from placed bitmap image in illu, it samples different values the the values in the original file.
That way if I have a picture with dark black background and I want to place it on a larger canvas with text, I can't sample the black and create a larger vector shape as background. If I do sample it, the print will show a difference in color and will not be approved (or worse will be printed like that)
Support said I should open the file instead of placing it, but what should I do if I want to place 6 images in one A4? open them all and copy paste each one?
Please resolve accuracy of the eyedropper.
Thank you :)
Barak Vinner
SpectX 3D & design studio -
Ton, hello! I don't care about screen representation as user. I know my image has different colors and I want THEM, not colors from preview which exists in inner AI world. I want 0-65-100-0 instead of 12,01-67,93-100-2,45. I don't need dirty channels in bright orange. It all turns to money when prints got rejected.
And I won't embed 80-250Mb image which I still edit and therefore want to be linked, just to make broken tool work. -
Embed the image and the eyedropper picks up the values from the image.
When the image is linked Illustrator picks the values from your monitor screen representation.
