Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Print Size Resolution Calculator
Calculates the uncompressed file size in megabytes required to print an image at a given size, DPI, and color depth. Use it to verify your camera file has enough resolution before sending a print to a lab.
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).
Key differences
| Print Size Resolution Calculator | Exposure Equivalents Calculator | |
|---|---|---|
| Category | Photography | Photography |
| Inputs required | 4 | 4 |
| Result | Required File Size (MB) | Equivalent Shutter Speed (s) |
| What it does | Calculates the uncompressed file size in megabytes required to print an image at a given size, DPI, and color depth. Use it to verify your camera file has enough resolution before sending a print to a lab. | 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. |