Dynamic Range Software (NOT HDR)

[petersmart]

Does anyone know if there is any free software to tell me the dynamic range of a picture?

Some of my editing programs have a histogram etc, but I'm looking for a way to find out the actual dynamic range in, say, stops etc.

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[RobertP]

Moved from computers to processing for more chance of replies....

 

[swanseamale47]

I'm told raw digger can do it but I don't use the program so cant check I'm afraid.