Exposure Equivalence
Rob Duell PhD
About this app
- Age 10
- Updated Feb 13, 2025
- OS IOS
Editor reviews
Exposure Equivalence is a specialized photography app that helps photographers maintain perfect exposure balance when adjusting manual camera settings or using ND filters. Based on the Sunny 16 rule for daylight photography, it eliminates mental calculations by instantly showing exposure offsets when changing aperture, ISO, shutter speed or filter density. The app supports both Sunny 16 presets and measured EV100 values, making it ideal for outdoor shooters who want precise exposure control without a light meter. With no ads, no accounts, and no data collection, it's a clean, focused tool for serious photographers.
Screenshots
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How to use:
Download and install Exposure Equivalence from the App Store (iOS/iPadOS 17+ required)
Select your lighting condition - choose between Sunny 16 presets or enter a measured EV100 value
Adjust any parameter (aperture, ISO, shutter speed or ND filter density) using the circular controls
Balance your settings until the exposure indicator shows "0" (correct exposure)
Use the app as a training tool by guessing settings first, then verifying with the calculator