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 | |
---|---|---|---|---|---|
at an Object Distance of1 | 50 cm | 40 cm | 32 cm | 25 cm | |
will cover an Object Field of | 49 × 49 cm2 | 40 × 40 cm2 | 30 × 30 cm2 | 23 × 23 cm2 | |
Magnification | 1 : 8.7 | 1 : 7.2 | 1 : 5.4 | 1 : 4.2 | |
DOF with f/ | 8 | 46 - 54 cm | 37 - 44 cm | 30 - 34 cm | 24 - 26 |
DOF with f/ | 11 | 44 - 58 cm | 36 - 46 cm | 29 - 35 cm | 23 - 27 cm |
DOF with f/ | 16 | 42 - 62 cm | 34 - 18 cm | 28 - 37 cm | 23 - 28 cm |
DOF with f/ | 22 | 39 - 69 cm | 32 - 53 cm | 27 - 39 cm | 22 - 29 cm |