Please note: All calculations are based on theoretical formulas only, assuming the principal planes are identical. Actual results will differ! Our sales team will be happy to assist you!
With this tool you can calculate the required focal length to take a picture of an object at a given distance in order to generate an image fitting on your sensor size.
The circle of confusion c is the diameter of a circle on the image plane that can be considered a single point when the image is observed (the size of the film/imager is different that the size of the print/screen. For 35 mm photography c is usually 0.025 mm, but this value depends of course on the size of the final prints.
The hyperfocal distance H is the minimum distance from the front principal plane that will appear sharp when the lens is focuses at infinity (x_{o} = infinity).
Calculator for finding the depth of field |
Calculator for finding the required aperture The maximum possible depth of field is obtained when the lens is focused one focal length f farther than the hyperfocal distance H: everything between Dn and infinity will be sharp. The value "Infinity" can be entered for D_{f}, but since it's case sensitive it has to be typed as shown. |