It really isn't that hard or confusing. Plus, it can go a long way to getting us better exposure on
our images!
All the histogram does is graphically display the tonal ranges in your photo from the darkest
black areas to the lightest white areas.
The left side is for black, the right side is for white.
Why should we use it? Why not just look at our LCD display and make adjustments from there?
Glad you asked...