
The following examples should give you an idea of which apertures create which kind of focus and depth of field effects. In each photo, the aperture was adjusted by 1-2 'stops', and the shutter speed adjusted accordingly to create the same exposure.

f3.5 = wide aperture = shallow depth of field (less in focus)

f5.6 = medium to wide aperture = shallow- medium depth of field

f8 = medium aperture = medium depth of field

f16 = medium to narrow aperture = medium to deep depth of field

f22 = narrow aperture = deep depth of field (more in focus)