I am using Windows 10, GIMP 2.10.38, and RawTherapee 5.10. I have a PhaseOne P65+ digital back that I use with my Contax 645 camera.
My PhaseOne raw files are *.TIF files.
When I try to open one in RawTherapee, it opens as a 220 x 220 pixel image instead of the much larger 4086 x 4086 pixel RAW file. I seem to recall mention that PhaseOne embeds a preview thumbnail in their RAW files, and that seems to be what RawTherapee is opening … a tiny, pixelated, low resolution thumbnail, instead of the robust RAW TIF file.
(SIDE NOTE: When opening a file in GIMP, GIMP does not pass the opening process over to RawTherapee, like it does with I open a DNG raw file, so, like RawTherapee, GIMP is not recognizing these TIF files as RAW files.)
I might add: I was heavily into photography years ago, and I used Adobe Photoshop CS3. These files all worked then, but now, for some reason, I cannot get CS3 to open them as full files–again, they open as 220 x 220 pixel images. After years of medical setbacks, I’m trying to get back into photography, but I have no idea why everything (GIMP, Darktable, RawTherapee, Photoshop CS3, etc.) is opening these files as small thumbnails. I also would like to avoid having to convert all of these files to DNG format, because, I know, in the past, my software recognized these PhaseOne TIFs as RAW files and opened them as such.
Hi @Veracity66! I think what’s happening is RawTherapee sees the .tif extension and tries to open it as a tiff and it succeeds, so it doesn’t bother trying to read it as a raw file. You can rename the files to have a different extension, for example to .iiq which is what some PhaseOne cameras use.