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To calculate the near, far and hyperfocal distance for a particular lens, please enter the focal length (millimetres), aperture f stop (number) and the object distance (metres) then click Calculate button. To clear the tables click the Reset button. Changing the camera film or sensor format also causes the system to recalculate.
Focal lengths are all in millimetres and this applet does not attempt to convert focal lengths into inches, thou, cubits, furlongs, rods, poles or perches etc! However, there is a very handy little converter available at http://www.garfnet.org.uk/converter if you like that sort of thing.
This project borrows heavily from an innovative web application originally developed in 1996 by:-
It was updated and extended using data from:-
And then it was:-
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