ISO Equivalence
Calculate ISO Equivalence instantly with the exact formula and a worked example.
ISO Equivalence
ISO 1
Shutter 1 (1/s)
ISO 2
Equiv. shutter
400
More about: ISO Equivalence
What it calculates
The “ISO Equivalence” calculator computes Equiv. shutter from 3 parameters: iso 1, shutter 1 (1/s), iso 2.
Used by photographers and videographers when setting up a shoot.
Example calculation
With parameters ISO 1 = 100, Shutter 1 (1/s) = 100, ISO 2 = 400 the result is 400 (1/400).
How to use
- Enter iso 1, shutter 1 (1/s) and iso 2 — each field above is adjustable with a slider.
- Equiv. shutter is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is ISO Equivalence calculated?
The ISO Equivalence calculator computes Equiv. shutter from iso 1, shutter 1 (1/s), iso 2. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the ISO Equivalence calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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