How histograms can help you control key factors that affect exposure levels. Correct exposures are the first step towards usable image files and the histogram displays provided in most digital cameras ...

Straightening, cropping, and removing red-eye are all fairly easy fixes to make to a photograph. Getting good tones, on the other hand, can be a more challenging problem. iPhoto’s Enhance button tries ...

Combed Histograms The normal distribution of tones in a digital image produces a smooth histogram with every one of the 256 tonal levels occupied. In a correctly exposed image, the peak of the graph ...