Sigma DPI Distortion Comparison
We shot each sample at f4 and f10. Not a perfect test because DOF is being measured
at an angle, but a good approximation. Half size crops shown. Increments are 1mm.
| f4 | f10 | |
| Hoya +2 |  |
 |
| Hoya +4 |  |
 |
| Hoya +7 |  |
 |
| Raynox DCR250 (+8) |
 |
 |
| B&W +10 |  |
 |
| Hoya +10 and B&W +10 (+20) |
 |
 |
