f/Calc is a calculator for photographic formulas. These formulas are at the heart of many interesting questions about photography. None of these formulas are difficult to compute with a scientific calculator, but doing it by hand is slow, tedious and error-prone. The faster you can get an answer, the faster you can get back to shooting. Or, you can take the same time to learn the answer to more questions! When you let f/Calc do the hard work, you gain an intuitive feel for what the results mean, because you can quickly try new input values to see how they affect the result.

The equations f/Calc uses aren't secret or difficult. You handled more difficult equations in high school math class, and this manual gives you all the equations.

You may therefore be asking, why use f/Calc if you can do without? Simply, because crunching the numbers by hand is tedious and slow compared to using f/Calc. The faster you can work through a problem, the quicker you can get back to shooting. Or, you can learn several things in the same amount of time as it would have taken you to crunch the numbers for a single problem by hand.

f/Calc also takes into account unit conversions and provides advice on calculated results based on its knowledge of lenses, helping you to avoid mistakes.

f/Calc Features:
1. f Number Arithmetic - Find out things like what f/2.8 plus 2.5 stops equals, and how far apart two aperture values are, in stops.
2. Depth of Field - Calculate the depth of a lens field of acceptable sharpness at a given aperture and focus distance.
3. Hyperfocal Distance - Find the optimum focus distance to get maximum depth of field for a given focal length lens at a given aperture.
4. Field of View - Find out how wide an area a lens can capture.
5. Angle of View - Find out what angle a lens of a given focal length covers, for a certain film format.
6. Magnification - Given the distance to the subject and the focal length of the lens, find out how large it will be on film.
7. Spot Meter - Find out how many degrees your cameras spot meter covers, with different lenses mounted.

There are 7 different "functions" on this calculator...
1. Field of View
2. Angle of View
3. Magnification
4. Spot Meter
5. f Number
6. Depth of Field
7. Hyperfocal Distance

Requirements:
* Adobe AIR runtime.

The license of this software is Freeware, you can free download and free use this calculator software.