About Over | Under
Calculate and compare aperture, shutter speed, shutter angle, frame rate, light sensitivity, and transmittance values. Configure the interface to suit your workflow. Over | Under is a simple and intuitive tool that gives...
Calculate and compare aperture, shutter speed, shutter angle, frame rate, light sensitivity, and transmittance values. Configure the interface to suit your workflow.
Over | Under is a simple and intuitive tool that gives photographers and cinematographers the ability to calculate and compare common photographic exposure parameter values – aperture, shutter speed, shutter angle, frame rate, light sensitivity, and transmittance.
Over | Under was created by working cinematographers for professional image makers, students, and hobbyists alike to help answer the questions that frequently arise on any set:
How much light will I lose if I close the lens aperture down from f/1.8 to f/5.6?
I can't add more light, but I want to maintain the same exposure level I had before I changed the aperture. My shutter was set to 1/2000s of a second; what should it be to compensate for the light loss?
I was shooting video at 24fps with 5 stops of ND in the matte box. I switched to 120fps for a slow motion sequence, and opened the shutter angle to 227º to regain some motion blur. I will be switching to standard speed shortly, and don't want to relight twice. How many stops of ND should I remove to maintain the same exposure level?
Over | Under can answer these and many more questions, in a simple, intuitive interface inspired by an all-familiar aperture ring.
Previous Versions
Here you can find the changelog of Over | Under since it was posted on our website on 2023-09-07 09:00:59.
The latest version is and it was updated on 2026-06-11 00:36:14. See below the changes in each version.
Over | Under version -
Updated At: 2025-06-01
Disclaimer
Official App Store Link
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