
The concepts of f stop, shutter speed, and ISO can intimidate novice photographers in the jump from automatic scene modes to taking creative control of their digital photo’s exposure.

Depth of field is how much of the image appears to be sharply focused and photographers use it as a creative compositional tool. Portrait photographers seek to isolate their subject using a minimum or shallow Depth of Field while landscape photographers try to get as much of the scene in focus by maximising Depth...

This composition technique from the art world may seem simple to use. However, it is a good basic starting point when composing images. Calling this a rule is perhaps over stating its use, as with anything in the creative world it is a guide and not something to be applied with mathematical rigidity.