Exposure Triangle Calculator
Balance aperture, shutter, and ISO by stops of light.
Setting that is changing
After the change
f/4.0 · 1/125 · ISO 100
To keep the same exposure, compensate with…
Aperture only
f/7.9
N/A (this is what you changed)
Shutter only
1/250
ISO only
ISO 50
What is this tool?
Helps you reason about the exposure triangle. Enter your current aperture, shutter speed, and ISO, pick which setting is changing and by how many stops, then see the new value plus how to compensate with each of the other two settings to keep the same exposure. Includes a plain-language stop explainer.
How to use it
- Enter current aperture, shutter (e.g. 1/125), and ISO.
- Choose which setting changes and by how many stops (+ = more light).
- Read the updated value and single-setting compensation options.
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