This exposure value reference table shows the exposure value (ev) for a range of aperture (f-number) values, assuming a shutter speed of 0.008 seconds. Every figure is computed with the same engine that powers our Exposure Value Calculator, so the numbers are exact.
| Aperture (f-number) | Exposure value (EV) |
|---|---|
| 2 | 8.97 |
| 4 | 10.97 |
| 6 | 12.14 |
| 8 | 12.97 |
| 12 | 14.14 |
| 16 | 14.97 |
| 24 | 16.14 |
| 40 | 17.61 |
| 56 | 18.58 |
| 80 | 19.61 |
How to use this table
Find the row closest to your aperture (f-number) and read across to the exposure value (ev). For a value between two rows, the real figure sits between them — or enter your exact numbers in the Exposure Value Calculator for a precise answer.
Need a value that is not in the table? — the Exposure Value Calculator does it instantly, for free, with the formula and a worked example built in.
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