Noise conversion for Full Frame to APS-C
An image on a Cannon APS-C camera of 1250 will have the same noise 3200 on a Full Frame sensor. This assumes that both sensors are the same type, so it may vary in real life use.APSC-C Sensor ISO x 1.6 x 1.6 = Full Frame ISO
| FULL FRAME | APSC-C (x 1.6) |
| 100 | |
| 200 | |
| 225 | |
| 256 | 100 |
| 400 | 156 |
| 640 | 250 |
| 729 | 285 |
| 800 | 313 |
| 1600 | 625 |
| 3200 | 1250 |
| 6400 | 2500 |
| 12800 | 5000 |
| 25600 | 10000 |
Sources:
https://northrup.photo/gear-basics/camera-body-features/sensor-size-crop-factor/
https://www.thephoblographer.com/2020/08/12/understanding-the-science-that-makes-photography-possible/
