Moritz von Rohr was an optical scientist at Carl Zeiss in Jena, Germany.
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Photos 3
von Rohr![Von Rohr's method of DOF calculation involves projecting object points to circles of confusion in the field plane (Einstellebene), with reference to the entrance pupil (Eintrittspupille) P. The caption is translated as: "Fig. 20. Concerning depth [of field] with photographic lenses. The upper and lower parts of the figure are identical in the position of the field plane, entrance pupil and the object. The only difference is the diameter of the entrance pupil, the upper being twice the size of the lower. For this reason the upper circles of confusion o1 o2 are also twice the size of the lower ones at the field plane O and the object side image o1 O o2 is twice as blurry as the lower. (By accident the print in the upper field plane O says O1 instead of o1.)"](https://upload.wikimedia.org/wikipedia/en/thumb/c/c6/Moritz_von_Rohr_1906_Depth_of_Field.png/330px-Moritz_von_Rohr_1906_Depth_of_Field.png)
Von Rohr's method of DOF calculation involves projecting object points to circles of confusion in the field plane (Einstellebene), with reference to the entrance pupil (Eintrittspupille) P. The caption is translated as: "Fig. 20. Concerning depth [of field] with photographic lenses. The upper and lower parts of the figure are identical in the position of the field plane, entrance pupil and the object. The only difference is the diameter of the entrance pupil, the upper being twice the size of the lower. For this reason the upper circles of confusion o1 o2 are also twice the size of the lower ones at the field plane O and the object side image o1 O o2 is twice as blurry as the lower. (By accident the print in the upper field plane O says O1 instead of o1.)"
Illustration of von Rohr's method for constructing front and near DOF limits from the outside-the-box parameters, aperture diameter d and angular circle of confusion limit eAwards 1
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About this person
Category
Academics
Type
Academic
Status
deceased
Dates
Lived 1868 to 1940 · aged 72
Written about in
4 languages
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