Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Exposure Equivalents Calculator
Find equivalent camera settings that produce the same exposure value when you change aperture, shutter speed, or ISO. Useful any time you want to swap depth-of-field or motion blur without altering overall image brightness.
Equivalent Shutter Speed
0.4 s
At 0.1 s and longer, motion blur is unavoidable handheld. Use a tripod and remote release; subjects moving during a 0.4 s exposure will streak.
The equivalent shutter speed comes from the reciprocity formula; these bands reflect the photographic rule that handholding usually requires faster than about 1/60 s (0.0167 s).
Depth of Field Calculator
Compute the total depth of field for any camera and lens combination using focal length, f-number, focus distance, and circle of confusion. Use it to plan sharp focus zones before a shoot.
Key differences
| Exposure Equivalents Calculator | Depth of Field Calculator | |
|---|---|---|
| Category | Photography | Optics |
| Inputs required | 4 | 4 |
| Result | Equivalent Shutter Speed (s) | Depth of Field (mm) |
| What it does | Find equivalent camera settings that produce the same exposure value when you change aperture, shutter speed, or ISO. Useful any time you want to swap depth-of-field or motion blur without altering overall image brightness. | Compute the total depth of field for any camera and lens combination using focal length, f-number, focus distance, and circle of confusion. Use it to plan sharp focus zones before a shoot. |