Designer - 32bit document - PNG export ok - PDF export not ok ?

[cgidesign]

In Designer 2.4.2 (Windows) I have a 32 document with linear sRGB color space.

I view it with 32bit preview (ICC Display Transform) - it looks ok. (the three screenshots appear twice in the post - ignore the bottom ones).

I export it to PNG - export is ok.

I export it to PDF - export is not ok (see the "rainbow gradient").

Difference seems to be:

PNG export allows to choose a sRGB ICC with gamma curve.

PDF export allows only sRGB ICC with linear gamma.

Is there a way to solve this?

[cgidesign]

I asked to soon.

The solution is to set "Color Space" in the PDF export dialog to "RGB" (it was set to "as document").

But the document was in RGB all the time.

It seems to me, in case of 32 bit RGB documents, the change from "as document" to "RGB" is not changing the color mode (cmyk to rgb for example), instead it is changing the gamma curve selection.

If I leave it at "as document" I only get linear ICC profile choices for export.

If I change it to "RGB" I only get gamma curve ICC profile choices for export.

EDIT:

And on top of that, in my document I used filters, clippings, gradient etc. to create the "rainbow gradient. Thoses ones export fine to png. But they don't to PDF. So I had to change the "RGB" setting and I had to flatten the "rainbows" for PDF export.

Ok, that was a tricky one for me.

Edited May 15, 2024 by cgidesign
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