If you’re someone like me and often gets lost in the numbers game of shooting with DSLRs, you should check out the HDSLR Calculator over HDSLR Cinema. If you want to see how much depth of field you’ll have, you can enter in your camera’s crop factor, focal length, aspect ratio, aperture and distance and you’ll get a graph of how in focus the background will be. It’s very useful tool for planning out shoots (and for learning the basic photo rules.) They also feature tools for frame rate conversion, frame duration, aspect ratios, file sizes, composition and required light vs. allowed light. I’ve been messing around with it a bunch this morning.
Thanks to the heads up from Cinema5D.