Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Long Exposure Time Calculator
Calculates the correct long-exposure shutter speed when stacking ND filters, accounting for reciprocity failure. Use it when shooting waterfalls, light trails, or seascapes with neutral density filters.
Required Exposure Time
17.41 seconds
1-30 seconds is the in-camera range most bodies meter and time automatically; 30s is the typical maximum before you must switch to Bulb mode.
Each ND stop doubles exposure time per the 2^stops rule; the 8192-second result is base 1s pushed 13 stops. Bands flag practical capture limits.
Hyperfocal Distance Calculator
Finds the closest focus distance at which a lens keeps everything from half that distance to infinity acceptably sharp. Essential for landscape and street photographers seeking maximum front-to-back sharpness.
Key differences
| Long Exposure Time Calculator | Hyperfocal Distance Calculator | |
|---|---|---|
| Category | Photography | Photography |
| Inputs required | 4 | 3 |
| Result | Required Exposure Time (seconds) | Hyperfocal Distance (mm) |
| What it does | Calculates the correct long-exposure shutter speed when stacking ND filters, accounting for reciprocity failure. Use it when shooting waterfalls, light trails, or seascapes with neutral density filters. | Finds the closest focus distance at which a lens keeps everything from half that distance to infinity acceptably sharp. Essential for landscape and street photographers seeking maximum front-to-back sharpness. |