Future Features

This program is not finished. Surely there are other formulæ out there that are hard enough to calculate that most people don't even bother. If I give f/Calc the ability to calculate these, more people will experiment with these formulæ, and so will learn more about the photographic process.

So, what do you think f/Calc should be able to calculate? Naturally, I am not interested in a major departure from the program's current "feel". For example, a "development timer" tab would not be appropriate at all. Some ideas that would work are:

macro formulæ
bellows factor correction
fisheye calculations (the Angle of View calculator is only useful for rectilinear lenses)
magnification, in a form that works for extension tubes
trim trailing zeros from fractional parts of numerical fields

I also have plans for general improvements to the program, some of which may go into a "pro" shareware version:

Printable graphs:
- hyperfocal distance, against aperture, for a given lens focal length
- depth of field for a given focal length, for several apertures
Have the program save the values in its fields before the program shuts down, and restore them on startup
In the f Numbers tab, it would be nice if the "round to nearest sixth of a stop" feature used actual fractions, instead of decimal approximations.
Add a calculation for the inverse of "field of view": given a subject size and distance, calculate the required focal length to capture the subject.
Add context-sensitive help.
Allow the main window to be minimized. Maybe add "minimize to system tray" feature.

I need feedback, further ideas, and a feel for whether such a "pro" version would be helpful. The effort of implementing the graphing module alone might well take this program out of the freeware arena. (There will always be a freeware version of this program, however, with fewer features than the "pro" version.) Your feedback will help me to decide these issues.

Email your feature requests, comments and rants to: tangent@cyberport.com.