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View Full Version : GIMP 2.10 now supports 32-bit files


Ken Lee
7-May-2018, 09:58
See https://www.gimp.org/release-notes/gimp-2.10.html/ (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
8-May-2018, 10:13
Further investigation shows that at this time, there is no installer for MacOS, but apparently you can install it via the terminal.
Bruce Watson
8-May-2018, 11:19
See https://www.gimp.org/release-notes/gimp-2.10.html/ (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
8-May-2018, 15:30
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
9-May-2018, 14:41
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 (https://en.wikipedia.org/wiki/Wheat_and_chessboard_problem)

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