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Wide-Angle Rolleiflex, Photo F.W. Stutterheim
Photograph of Ferdi’s Wide-Angle Rolleiflex fitted with its only Rolleinar set, no. 2 in Bayonet IV.
Photo ©2019  F.W. Stutterheim

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

1 Distance measured in cm from object to front lens.