Hyperfocal Distance Calculator

Version 1.0   20 September 2019

Summary

This is a special purpose calculator which calculates the hyperfocal distance of a lens.

Instructions



Enter data into the white fields.
The grey field is used to display the hyperfocal distance when the RETURN
or ENTER key is pressed.


Calculations

The widget uses the following simple equation:

hyperfocal distance = (f * f / (n * c)) + f, where f is the focal length of the lens in mm,
n is the f-stop number and c is the circle of confusion in mm.

The result is expressed in mm.

License

The Hyperfocal Distance Calculator is Copyright © 2019 Harry Whitfield (G6AUC).

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
St, Fifth Floor, Boston, MA 02110-1301 USA

Widget Concept, Coding and Documentation

Harry Whitfield (G6AUC)

