I am new to Siril (version siril-0.99.4 here) , and I have observed a strange phenomenon that I cannot control. Certainly I am doing something wrong, but I could not figure out which.
After processing the final stacked file with Siril, I like to make some final touches with GIMP. So I save files in 16-bit TIFFs and open in GIMP.
90% of the times, I open something that looks like a totally black image in GIMP. I have to stretch the histogram A LOT to make it look like in Siril. This does not seem to impact the final version a lot (I see no pixelation), but I can see missing frequencies in GIMP histogram. If I save the file in (8-bit) JPG and open in GIMP and I correct the histogram I see a horrible watercolor mess, as expected by the low 8-bit depth.
Yet, sometimes I open the image in GIMP perfectly fine, without any need for histogram correction… Why is this? How can I tell Siril to save the TIFF with the same exposure that I see in its window?
I guess this has to do with the linear vs log image, but I was unable to solve the issue playing with this in both Siril and GIMP.