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Sorry if I wasn't clear on

Sorry if I wasn't clear on this - by correct scale I mean every image is scaled by the same factor so that 1 pixel intensity measures the same amount of physical light energy for all images.

After doing some research I found each file has a different value for "baseline exposure", and to convert them back to the same scale one needs to apply following correction:

intensity = raw_intensity * (2^ baseline_exposure)

After this conversion intensities are now consistent across images.

I still have a few questions though:

- Does libraw expose "baseline_exposure" through API?
- I think above correction should be applied to post processed image, is that correct?