Equivalent Exposure Calculator
Enter your current aperture, shutter speed, and ISO, then adjust one setting to see what the other two must be to maintain the same exposure.
Base Exposure
Enter your current camera settings.
f/
4.0
1/100
200
Exposure Value (EV)
EV 12.0
Find Equivalent
Change one value — the calculator solves for the third.
I want to change...
1/800
Equivalent Settings
Aperture
f/4.0
Shutter
1/100
ISO
200
Stop Comparison
| Setting | Base | Equivalent | Stop Change |
|---|---|---|---|
| Aperture | — | — | — |
| Shutter | — | — | — |
| ISO | — | — | — |
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Summary
Enter your current aperture, shutter speed, and ISO, then adjust one setting to see what the other two must be to maintain the same exposure.
How it works
- Enter your current aperture (f-stop), shutter speed, and ISO as the base exposure.
- The calculator computes the Exposure Value (EV) for your settings.
- Choose which parameter you want to change — aperture, shutter speed, or ISO.
- Adjust the target value using the slider or input.
- The calculator solves for the remaining free parameter to maintain the same EV.
- Copy or note the equivalent settings to use on your camera.
Use cases
- Switch from handheld to tripod: slow the shutter and lower ISO while keeping the same EV.
- Change depth of field: open the aperture wider and compensate with a faster shutter speed.
- Reduce motion blur in sports: use a faster shutter and compensate with a wider aperture or higher ISO.
- Minimize noise: lower the ISO and compensate by opening the aperture or slowing the shutter.
- Use ND filters: determine the new shutter speed after adding an ND filter of known stops.
- Plan lighting changes on set without re-metering the scene.
Frequently Asked Questions
Last updated: 2026-06-09 ·
Reviewed by Nham Vu