Pro’s killer kit
Depth of field calculator
Kate says… When you’re trying to figure out how much of a detail or portrait you’ll get in focus at a particular aperture, a depth of field calculator (such as dofsimulator.net) can give you a good idea of whether you need to go smaller or bigger with aperture. Just input focal length, aperture and distance from the subject, and the calculator will tell you how wide a sliver of the subject will be in focus. If, say, you want both eyes sharp in a portrait, and they’re at different distances from your Nikon because your subject is at an angle, a depth of field of 10cm will reassure you that both should be sharp in your final image.