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Loss of resolution for grayscale images placed in Illustrator document

New Here ,
Aug 28, 2020

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It seems my previous post disappeared so I try again: 

is there a way to prevent that grayscale images placed in an illustrator document to change/loose resolution? This har not been a problem in Illustrator before.

For comparison, the same file placed in an InkScape document will stay as the original (see image and caption). This may be due to some Illustrator setting, but I cannot figure out why this happens or how to change it. 

Thanks!

microscope grayscale image: original image (lower panel) same image places in Inkscape (left) and Illustrator (right). Clearly, something happens in Illustrator!microscope grayscale image: original image (lower panel) same image places in Inkscape (left) and Illustrator (right). Clearly, something happens in Illustrator!

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Correct answer by Ton Frederiks | Adobe Community Professional

Illustrator does not like 16 bit grayscale images and does strange things with embedded grayscale images in an RGB document.

Keep them linked.

https://illustrator.uservoice.com/forums/601447-illustrator-bugs/suggestions/41260390-embedded-grayscale-image-in-rgb-document-becomes-t

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Loss of resolution for grayscale images placed in Illustrator document

New Here ,
Aug 28, 2020

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It seems my previous post disappeared so I try again: 

is there a way to prevent that grayscale images placed in an illustrator document to change/loose resolution? This har not been a problem in Illustrator before.

For comparison, the same file placed in an InkScape document will stay as the original (see image and caption). This may be due to some Illustrator setting, but I cannot figure out why this happens or how to change it. 

Thanks!

microscope grayscale image: original image (lower panel) same image places in Inkscape (left) and Illustrator (right). Clearly, something happens in Illustrator!microscope grayscale image: original image (lower panel) same image places in Inkscape (left) and Illustrator (right). Clearly, something happens in Illustrator!

Adobe Community Professional
Correct answer by Ton Frederiks | Adobe Community Professional

Illustrator does not like 16 bit grayscale images and does strange things with embedded grayscale images in an RGB document.

Keep them linked.

https://illustrator.uservoice.com/forums/601447-illustrator-bugs/suggestions/41260390-embedded-grayscale-image-in-rgb-document-becomes-t

Topics

How to, Import and export

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49

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New Here ,
Aug 28, 2020

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Edit: seems not like only loss of resolution though, perhaps more some sort of additive effect- as the image is multiplied or something. If that makes any sense... 

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Adobe Community Professional ,
Aug 28, 2020

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Is the image CMYK?

What resolution does Illustrator say it is? What resolution should it be?

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Adobe Community Professional ,
Aug 28, 2020

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How do you check the resoution? Links panel?

Are they linked or embedded

 

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Adobe Community Professional ,
Aug 28, 2020

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Are we really talking about resolution here? Or that the image is getting lighter, losing detail?

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New Here ,
Aug 28, 2020

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Thanks for the suggestions: you are right, it is not resolution: turns out something strange happens when the .ai document is CMYK, but not when the document is RGB (see pics) (Thanks Doug Roberts for suggesting color space as issue)....Cannot really explain this- but problem seems solved. 

CMYK.PNG

RGB.PNG

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Adobe Community Professional ,
Aug 28, 2020

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Illustrator does not like 16 bit grayscale images and does strange things with embedded grayscale images in an RGB document.

Keep them linked.

https://illustrator.uservoice.com/forums/601447-illustrator-bugs/suggestions/41260390-embedded-grays...

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