Given that both Lightroom and (as far as I know) Photoshop use adaptive histograms, is there any way to look at my photos using a true histogram?

By true I mean showing a true distribution of greyscale values across the x axis.


Have you check RawDigger. As far as I know it show really raw histogram


Try ImageJ http://imagej.nih.gov/ij/ together with dcraw used as import plugin to read RAW files.

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