Depth of field calculator

[Rick0r]

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

This is highly educational. 50mm f/1.4, from 5 feet away, and I've been drinking? No problem, I can do that.

Near limit - 4.92 ft
Far limit - 5.08 ft
Total - 0.16 ft = ~2 inches.

[talan]

I'm going to read it when I have some time to digest :). Most of my shooting is totally trial and error :p

[Rick0r]

It's good to get a feel for such situations as "Don't bother shooting bands with f1.4 even in low light because your focal length is just a few mm at close range" kinda thing

[PureKiwi]

I started reading this , then got called away , will have to start again :P