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Hello,

I was trying out to find something from this situation, but I found nothing, therefore I am launching a new theme. I hope you will help me. I skipped from InDesign and I am not a professional user, I can use some basic skills to make some basic prints.
 
My situation is: I am making a calendar with black and white photos. In ADesigner I open a photo which I processed in Lightroom to black and white, turn it into grayscale and save as new .jpg file. In the viewer (FastStone Image viewer) it looks the same as the original photo with color information in there. If I put the original photo to ADesigner, it looks the same. But if I put the new, to grayscale converted photo, this photo has much less of contrast. I tried converting the original photo in Photoshop too, same result.

If I export file with converted photo (using PDF X/4), photo looks the same as in APublisher, thus with much lower contrast. I tried to print this photo, same result. 

I found here some advice to make sure have checked Honour spot colors, but this effect shows immediately when I put the photo to ADesigner. This is weird in my eyes and I judged that export is not a problem, the problem will be in the way in which ADesigner "understands" converted photos to grayscale and doing some magic to change the converted photo. 

I attached 2 files. One (ČB1) is export in PDF X/4 with BW photo with color information, second (ČB2) is export in PDF X/4 with BW photo converted to grayscale. If some want to, I can upload the original and converted photo in jpg.

Thank you for advice. 

ČB2.pdf

ČB1.pdf

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