depth of field

Depth-of-field refers to the zone of focus in a photograph.

Selective focus can be is effective.

versus

The depth-of-field is determined by 2 controllable factors:

apertureThe larger the f-stop number, the larger the depth-of-field.

for example:

f28 creates an area with a larger depth-of-field than f 3.4 -

more will be in focus in f28

f16 f4f11 f2.8f8 f5.6

f 3.5 f 22

distanceThe further you are from the subject, the more that will be in

focus (larger depth-of-field).

10 inches 4 inches

f 3.4

Depth-of-field increases with distance. The farther

you place the camera from your subject, the more

that will be in focus.

You can shift your emphasis

by using manual focus.

What is in focus?