Originally Posted by
Luis-F-S
At least the G-Claron is an f/9 lens and the Apo rodagon is an f5.6 lens with optimum at f/16. All are designed from 1:3 to 3:1 so are usable in that range. A 3x print from 8x10 is a 24 x 30, larger than most people print on a regular basis. A 16x20 is a 2x enlargement from 8x10 neg, probably the max most will print on a regular basis in a hope darkroom. The Rodenstock literature says that "A further Gerogon type is the Apo-Grahigon with a still larger angle namdely 78˚. This again in response to request from camera manufacturers wanting to cover a 50x60 cm format with a still smaller camera. At same size reproductions, the Apo-Graphigon does this with a 240 mm focal length.....maximum aperture is f/11 and the working aperture is f/22. The scale range is 1:3 to 3:1." L
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