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Exposure Calc

iPhone / iPad
  • Utilities
  • Photo & Video
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A much improved version of Exposure Calc, now called XPOSURE with more scenes in the database and a variety of other utilities has been released. Take a look.


Exposure Calc aka iKspozher is a exposure computing tool for Nature Photographers. iKspozher calculates optimal exposure settings (with respect to incident light) for a given scene for a photograph for a varying choice of aperture, shutter speed and ISO speed of the sensor. In this version, there are about 70+ scene choices, the ISO speed ranges from 3 to 3200, aperture range from 1 to 90 and shutter speed from 1/8000 to 130 sec with 1/2 shutter/aperture stops.

If you don’t own a incident light meter, then this is the closest thing to incident light metering. Incident light meters expose the tones most accurately. Most in-built camera meters are reflective light meters and an optimal exposure of the scene depends on the reflectance of the subject being shot. The camera’s in-built meter renders the entire scene to give an overall medium-bright photograph. Most often you see flushed out or dark spots. With this exposure calculator you just have to get the settings are shoot! Its simple, quick and produces results.

There are also guidelines provided for long exposure photography of star trails and lightning for a chosen ISO sensor speed. All the calculated values conform to ANSI PH2.7-1986 Photographic Exposure Guide Standard.

iKspozher Features

1. Intuitive Interface
2. 55 scene selections in the database
3. Instant calculations as the user chooses the settings
4. Automatically saves user previous settings
5. Aperture and shutter priority modes
6. Long exposure of star trails and lightning
7. Conforms to ANSI PH2.7-1986 standard.

Note. This program is to be used as a guide, the correct scene exposure setting might vary slightly.

Note: Doesn't work with iPhone camera