GIMP 2.10 now supports 32-bit files

[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."

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.

[Ken Lee]

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

[Bruce Watson]

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."

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

[Ken Lee]

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.

[Emmanuel BIGLER]

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