Rudolf Ruehl: Difference between revisions
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=== E. Leitz Photographic Patents by Rudolf Ruehl === | === E. Leitz Photographic Patents by Rudolf Ruehl === | ||
*1966 MAR 28 - PHOTO LENS WITH A SHORT FOCAL LENGTH AND LARGER BACK INTERCEPTOR FOCAL LENGTH (7 / 5 - see above left and [[35mm f/2.8 Elmarit-R I]] | *1966 MAR 28 - PHOTO LENS WITH A SHORT FOCAL LENGTH AND LARGER BACK INTERCEPTOR FOCAL LENGTH (7 / 5 - see above left and [[35mm f/2.8 Elmarit-R I]]) | ||
*1972 MAR 22 - WIDE ANGLE LENS (8 / 8 - see above right and [[28mm f/2.8 Elmarit-R I]]) | *1972 MAR 22 - WIDE ANGLE LENS (8 / 8 - see above right and [[28mm f/2.8 Elmarit-R I]]) | ||
Revision as of 18:53, 8 April 2012
E. Leitz Photographic Patents by Rudolf Ruehl
- 1966 MAR 28 - PHOTO LENS WITH A SHORT FOCAL LENGTH AND LARGER BACK INTERCEPTOR FOCAL LENGTH (7 / 5 - see above left and 35mm f/2.8 Elmarit-R I)
- 1972 MAR 22 - WIDE ANGLE LENS (8 / 8 - see above right and 28mm f/2.8 Elmarit-R I)
