GIMP 2.10 now supports 32-bit files

See https://www.gimp.org/release-notes/gimp-2.10.html/

"High bit depth support allows processing images with up to 32-bit per color channel precision and open/export PSD, TIFF, PNG, EXR, and RGBE files in their native fidelity. Additionally, FITS images can be opened with up to 64-bit per channel precision."

I just imported a 16-bit grayscale Photoshop file and GIMP retained the embedded 16-bit Adobe Gamma 2.2 Grayscale profile.

I haven't tested more than that. I am wondering if the output TIF file is suitable for input to Quadtone RIP for Piezography.

Further investigation shows that at this time, there is no installer for MacOS, but apparently you can install it via the terminal.

Quote:

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Originally Posted by Ken Lee

See https://www.gimp.org/release-notes/gimp-2.10.html/

"High bit depth support allows processing images with up to 32-bit per color channel precision and open/export PSD, TIFF, PNG, EXR, and RGBE files in their native fidelity. Additionally, FITS images can be opened with up to 64-bit per channel precision."

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Well, that didn't take long. Only what -- 15+ years? Finally GIMP can become interesting to B&W photographers.

I tried installing it on MacOS from the terminal using HomeBrew - but I got Gimp 2.8, the old version.

I tried it on Windows running on a Mac under VMWare Fusion. The fonts and widgets are very small, unusable.

Hi !

I'm running Linux Fedora, and for this distribution, GIMP 2.10 is not yet ready. However I re-compiled GIMP 2.10 from source code, and it runs without trouble.
The only trouble is that I only have a few 16-bit images for testing ... since I do not have a real scanner ;)

64-bit! Do you remember this old legend?
The Wheat and chessboard problem

An integer number with 64-bit can exceed the total number of elementary particles in our Universe ;)