Depth of field with Rolleinar 2
For the Wide-Angle Rolleiflex only the Rolleinar 2 was available. Wide-angle lenses focus to a shorter object distance by nature making Rolleinar 1 unnecessary and focusing even closer than 22 cm is pointless making Rolleinar 3 irrelevant.
DOF Distagon 4/55 mm
Circle of confusion = f/700
Rolleinar number | 2 | 2 | 2 | 2 | |
Object Distance1 (cm) | 50 | 40 | 32 | 25 | |
Size Object Field (cm2) | 49 × 49 | 40 × 40 | 30 × 30 | 23 × 23 | |
Magnification | 1 : 8.7 | 1 : 7.2 | 1 : 5.4 | 1 : 4.2 | |
D.O.F. (cm) with f/ | 8 | 46 - 54 | 37 - 44 | 30 - 34 | 24 - 26 |
11 | 44 - 58 | 36 - 46 | 29 - 35 | 23 - 27 | |
16 | 42 - 62 | 34 - 18 | 28 - 37 | 23 - 28 | |
22 | 39 - 69 | 32 - 53 | 27 - 39 | 22 - 29 |