Depth of field calculator

[Steep]

Tell it what camera you have, what lens you're using, the f stop and the focal distance at it will tell you the depth of field, amazing! :)

http://www.dofmaster.com/dofjs.html

[seberri]

i find it difficult to use

it will be si easy ti do just as you say : camera >> lens >> f

i couldn't find how to use it

[Marcel]

Worked fine for me, very easy to understand too.
Handy customisable printout option for you to take out with you into the field.

It's good for someone like me who is new to SLR's and how much differing f stops affect the focal distance.