[Digikam-users] digiKam and floating point tiffs and openexr files

Elle Stone ellestone at ninedegreesbelow.com
Tue Jan 5 15:57:27 GMT 2016

On 01/04/2016 04:23 PM, Maik Qualmann wrote:
> Seeking 32-bit images with a very high dynamic range. An example on this site:
> http://www.cheshireeng.com/HDReye/Downloads.html
> Here's a current comparison between Darktable and digikam:
> https://goo.gl/photos/EkYY9X3s7doGCUPE6
> As shown by other programs to these HDR images? Gimp 2.9.x for example?

Is that file supposed to be encoded linearly? Or some other curve? There 
doesn't seem to be an embedded ICC profile, so what you see depends on 
what profile you assign. Neither linear gamma sRGB nor regular sRGB seem 
right, and afaik the regular sRGB color space with its odd TRC is not 
much used for encoding HDR images. Such images really should be encoded 

I'll try to put together a couple of high dynamic range linear gamma 
sRGB images and post them for you. It might take a couple of days.


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