About:

  PDoF is a Depth-of-Field calculator. It is designed to help
  photographers to estimate the sharp area of picture.

Installation:

  Install PDoF.prc file to your Palm (in Windows double-clicking the
  file should do it).

System Requirements:

  The program is tested only under PalmOS 3.1.1 but it should work with
  every version of PalmOS greater or equal than 2.0.

How To Use:

  Just enter all required parameters and hit the Calculate button.

  For example, if the film used is 35mm and the camera is focused to 5.0
  meters, the focal length is 35 millimeters and aperture is 8 then enter

    focal length: 35
    aperture:     8
    distance:     5
    film size:    35mm

  and hit the button. The results should be:

    near edge of the sharp area: 2.415 meters
    far edge of the sharp area:  [inf] meters (i.e. infinity)

Feedback:

  Please, feel free to send me an e-mail if you like PDoF.
  You can also send me feedback, bug reports and comments
  about the program. The address is: <mjk@iki.fi>.

History:

  Version 0.x

    The original code was actually a simple Perl script called pdof (Perl
    Depth-of-Field). It is still available at my web site.

  Version 1.0

    This was the first attempt to make a Palm program. Actually I'm quite
    proud of it, because the program was simple, easy to use and it really
    worked. This version didn't do much. It only collected the parameters
    and outputted the results.

  Version 1.1

    This version included better floating point output and the infinite
    values were expressed better than in previous version. Also, in this
    version saving all parameters as preferences was added so they were
    available next time, when the program started.

  Version 1.2

    Current version. The possibility to choose a film size added.

Credits:

  Thanks to Fred Bayer for making the PrintDouble code. And thanks to
  Warren Young for packing and tweaking the PrintDouble code.

  URLs to get the original source code:
    http://www.lispme.de/lispme/gcc/tech.html
    http://www.cyberport.com:443/~tangent/palm/float.html

License:

  PDoF 1.1 Copyright (c) 2000 Matti J. Kärki

  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

Contacting The Author:

  e-mail: mjk@iki.fi
  www:    http://www.iki.fi/mjk