Share for Review (15.1, ie. June 2020) color shift due to corrupt blend mode overlays
I feel like we've seen these kinds of issues before. But I noticed in the new "Share for Review" (InDesign 15.1) colors in a test document are shifting. A quick comparison shows that blend modes aren't been exported properly when sending a document up for "Share for Review."
In the screen shot, you can see what I mean: Top is the Review version as viewed in browser, bottom is the correct version as seen in InDesign. Some of the modes seem ok (Multiply, Normal opacity adjustments). But most blending modes aren’t rendering correctly (Hard and Soft Light look identical; Difference is something else entirely; even Screen isn’t looking right.)
Verified it isn't a browser issue or even an RGB export issue.
While this doesn't affect the ability to generally review a document, I can imagine a lot of feedback along the lines of "images look wrong" if using blending modes on overlaid objects.
Tested with both Ai objects embedded in Id document, as well as shapes created directly within Id.
We’re reviewing this.
Adobe InDesign team
Uwe Laubender commented
Share for Review should use a different approach with transparency.
Also overprinting elements should be calculated. The result should be as if we use "Simulate Overprint" enabled with PDF Export (Print) which is possible when using Acrobat 4 (PDF 1.3) compatibility.
( ACP )