Histograms

A histogram is a useful tool when reviewing a digital exposure, and is an excellent way to check if highlights are blown out or if your lens is capturing a wide tonal range. Many people find histograms confusing, and I have to admit that I learned to read them through trial and error more than anything else.

However, I found this excellent visual tutorial to reading a histogram earlier on today over at Luminous Landscape which explains it in some detail.