In article , wrote:

I am new to reading digital photo histograms.
...
...Can anyone direct me to a better explanation of this? One that doesn't
have a degree in physics as a prerequisite?

You might want to start with:

http://www.luminous-landscape.com/tu...stograms.shtml

ron

P.S. Didn't this question come up not too long ago - like within the past
couple of weeks?