Matching dcraw output in RT

Software RawTherapee
1

I developed a series of .arw files in dcraw with the command line args dcraw -v -6 -T -o 2 -w -W . Now I would like to develop matching images using RawTherapee, but I am stuck. The ‘neutral’ profile on the raw appears way lighter than the dcraw output - which is the linearized raw in AdobeRGB with gamma 2.2. Since those tiffs will be combined into an hdr used for lighting I dont want to just eyeball the values. Maybe someone can find a way to match the dcraw output in RT?

I uploaded three example pairs to OneDrive

2

So the closest I could get so far is:

-Apply neutral profile to raw
-Set working Profile and output Profile to AdobeRGB

if i apply a gamma of ~0.8 to the resulting image it almost matches the dcraw output. Is there any reasonable explanation for this tonal mismatch?

3

so, at this point im not sure if the problem is black point, gamma or both. I managed to match the Photomatix result with LuminanceHDR using the ‘Save Reference Image’ option (with wb), so thats a starting point at least. Are there any Transformations apart from working and output profile being applied in RT between final output and the ‘reference image’ when exporting with ‘neutral’ profile.

4

I haven’t used reference image in a long time, so I don’t remember. It is definitely less processed (or processed differently) than neutral and commonly used for profiling.