📷 Aperture F-Stop Converter
Calculate exposure stops, aperture diameter, and equivalent settings
f/
Aperture
f/2.8
Diameter: 17.86 mm
Light (vs f/1)
12.76%
EV Value
EV 3.0
Stops from f/1
1.5
T-Stop (est.)
T3.1
⚖️ Equivalent Exposure Settings
Same exposure, different aperture (compensate with shutter or ISO)
| Stop Change | New f-stop | Shutter × | ISO × |
|---|---|---|---|
| -3 | f/1.0 | 0.13× | 8.00× |
| -2 | f/1.4 | 0.25× | 4.00× |
| -1 | f/2.0 | 0.50× | 2.00× |
| 0 | f/2.8 | 1.00× | 1.00× |
| +1 | f/4.0 | 2.00× | 0.50× |
| +2 | f/5.6 | 4.00× | 0.25× |
| +3 | f/7.9 | 8.00× | 0.13× |
📊 F-Stop Scale Reference
📖 Aperture Quick Guide
Wide Aperture (f/1.4 - f/2.8)
- More light, faster shutter speeds
- Shallow depth of field (blurry background)
- Great for portraits, low light
Narrow Aperture (f/11 - f/22)
- Less light, slower shutter speeds
- Deep depth of field (sharp throughout)
- Great for landscapes, architecture