hfdcalculator original HFD Calculator for iPhoneHFD Calculator app can tell you precisely, in either feet, inches, meters, or centimeters, the point where the hyper focal distance lies. The app uses algorithms based on your camera type, lens aperture, and focal length to come up with the exact spot. It’s up to you to have your camera on a tripod and to manually focus—neither of which your iPhone can help with (yet…)—and then click away.

HFD Calculator has a very simple-to-use interface. Choose your camera type from more than 150 options, enter the aperture and the focal length, and the HFD appears at the top of the screen. The app very quickly recalculates as your parameters change.

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