Thank you.
As I undestand you exported a raw image to JPG, etc, and you have no problems. So, it could be my screen. I follow the advice on the posts bafore and I think I should not have problems. I will try using other screen.
What I saw that the JPG and TIFF with higher resolucion, 300ppp are the ones that lose color and contrast.
Those with 100ppp resolution, are perfect in JPG and almost perfect Tiff.
It is contradictory and senseless that I edit in Darktable and then have to re-edit in Photoshop because the image to be assembled with another one, does not look the same as the edition in Darktable.
Do you have high-quality resampling on, when you export? And if you view the image at 100% in the darkroom, does contrast/colour change?
For raw, that does not influence anything, except for the embedded JPG.
I think you need to share the two files here so folks can start to understand what you are seeing.
The contrast and colour changes depending on whether I export it to JPG or TIFF, sRGB or RGB. It also changes if I export it with 100dpi or 300dpi.
The only image exactly the same as my Darktable edition is JPG sRGB 100
I tried but it is imposible because are too big. I do not know if there is another way to do it
Please upload the raw and the sidecar (xmp). I donât see how we could help without those.
The DPI setting, without a size in mm/cm/inches does not say anything about the size of the image in pixels.
3000 px x 2100 px could be 10 inches x 7 inches at 300 DPI, or 50 inches by 35 inches at 60 DPI, e.g. for a poster. Yet, itâs the same number of pixels, the same processing.
You understand that is just non sense. A numerical image cannot have ppp. What would an inch means for a numerical image of 1024x1024 for example? A ppp has only a mean if the picture is actually printed on a physical paper or displayed on a specific screen.
Dropbox or some other similar and then share the link.
OK. @Pascal_Obry Isnât this the issue fixed recently?
@susanag Susana, you are exporting a HUGE file. 99 cm x 66 cm (39 inches x 26 inches) at 300 DPI means about 11700 x 7800 px.
I assume your input file is not so big, so you have to upscale.
There was a bug, fixed recently, that affected 8-bit output (for example, JPG, but not 16-bit TIFF) when upscaling with the high-quality resampling (Spanish: remuestreo de alta calidad) option turned off. For now, enable the option (I donât think you can do anything else with 4.6.1).
At 100 DPI, the resolution would be much lower, 3900 x 2600 px, so probably no upscaling is involved.
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You see now that 300ppp means nothing until you say for which dimension you export here 99cm x 66cm and as explain in another comment this is a HUGE image. There was no way we could guess that. Letâs say that the output was 2.5cm x 2.5cm then the image would be 300x300 in size.
My final work is an assembly that I want to print 99cms x 66cms. (that is, the 3x2 proportion of the initial image).
Initial photo: edited in Darktable and exported to Tiff, Adobe RGB to assemble with another one in Photoshop. Since Iâm going to print it, Iâll give it 300dpi.
Again, see:
However: images that large are often not viewed from close distances, and lower resolutions are enough. 300 DPI is usually used for reading distance.
So I understand, are all three of your applications configured for color management?, Oh and when you opened in GIMP, what did you select for the âretain embedded profile/apply GIMP profileâ question?
I choose keep. But if I chose the default âGIMP built-in sRGBâ and âconvertâ I have also the same result.
Yes, could be it indeed.