500 rule calculations for my gear
For a Canon Rebel EOS T7 (crop factor 1.6x)
For Kit Lens (18mm – 55mm)
| Focal Length | 500 Rule | 400 Rule | 300 Rule |
|---|---|---|---|
| 18mm | 17 sec | 13 sec | 10 sec |
| 24mm | 13 sec | 10 sec | 7 sec |
| 35mm | 8 sec | 7 sec | 5 sec |
| 55mm | 5 sec | 4 sec | 3 sec |
For Zoom Lens (75mm – 300mm)
| Focal Length | 500 Rule | 400 Rule | 300 Rule |
|---|---|---|---|
| 75mm | 4.4 sec | 3.5 sec | 2.6 sec |
| 100mm | 3.1 sec | 2.5 sec | 1.9 sec |
| 135mm | 2.3 sec | 1.9 sec | 1.4 sec |
| 200mm | 1.6 sec | 1.3 sec | 1.0 sec |
| 300mm | 1.0 sec | 0.8 sec | 0.6 sec |