Product model: Canon close-up ring
Product size: 13mm 21mm 31mm
Ring material: metal
| Ring combination | Focusing distance | Image coverage | Camera distance | Exposure factor | Image magnification |
| 13mm | Infinity | 10×15 6.9×10.3 | 21 16 | 1.5 1.8 | 0.24 0.35 |
| 21mm | Infinity | 6×9 4.7×7.0 | 13 14 | 2.0 2.3 | 0.40 0.51 |
| 31mm | Infinity | 3.3×5.0 2.9×4.4 | 7.7 7.0 | 3.0 3.4 | 0.72 0.83 |
