Exposure Assistant

This application approximates the length of exposure for various B&W films (and some color films) in low light situations. In low light, extra exposure is needed due to reciprocity failure (also known as the Schwarzschild effect). As such, your camera's meter is not accurate in low light. This application approximates the proper exposure time (based upon manufacturers datasheets). A timer is now included in the application.

The application warns when the user enters an exposure longer than described in manufacturer's datasheets. Although the exposure in these instances is crudely approximated by mathematical extrapolation, it is crucial that users conduct their own exposure tests in these very long exposure situations.

Current supported films:
Adox CHS 25/50/100
Adox CHS 100 II
Adox CMS 20 II
Adox Silvermax 100
Agfa APX 100/400
Bergger Pancro 400
Fomapan 100
Fomapan 200
Fomapan 400
Fuji Acros 100
Fuji Provia 100F
Fuji Velvia 50
Fuji Velvia 100
Ilford Delta 100
Ilford Delta 400
Ilford Delta 3200
Ilford FP4 Plus
Ilford HP5 Plus
Ilford PanF Plus
Ilford XP2 Super
Kentmere Pan 100
Kentmere Pan 400
Kodak Ektar 100
Kodak Portra 160/400
Kodak TMAX 100
Kodak TMAX 400
Kodak Tri-X 400
Rollei RPX 25
Rollei RPX 100
Rollei RPX 400
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4.7
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What's New

Added Kodak Tri-X 320, Fuji Superia 200 & 400
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Additional Information

Eligible for Family Library
Eligible if bought after 7/2/2016. Learn More
Updated
September 27, 2019
Size
193k
Installs
1,000+
Current Version
3.8
Requires Android
4.1 and up
Content Rating
Everyone
Permissions
Offered By
Matthew Bognar
Developer
Department of Statistics and Actuarial Science University of Iowa
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