Difference between revisions of "Busch Vademecum"
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− | [[Emil Busch]]'s '''Busch Vademecum''' was a lens kit in a casket that contained a set of different lens elements in rings, plus a lens barrel with inbuilt variable iris [[diaphragm]]. The user could put one lens element ring onto each opening of the lens tube, and could remove the lens elements to use another combination of elements instead. With this lens kit the user had a kind of variable lens, with just the inconvenience of unmounting, disassembling, reassembling and remounting for each change of lens focus. | + | [[Emil Busch]]'s '''Busch Vademecum''' was a lens kit in a casket that contained a set of different lens elements in rings, plus a lens barrel with inbuilt variable iris [[diaphragm]]. The user could put one lens element ring onto each opening of the lens tube, and could remove the lens elements to use another combination of elements instead. With this lens kit the user had a kind of variable lens, with just the inconvenience of unmounting, disassembling, reassembling and remounting for each change of lens focus. The kit can be seen as a versatile variant of the [[convertible lens]] concept. |
==Links== | ==Links== |
Revision as of 17:40, 25 July 2010
Emil Busch's Busch Vademecum was a lens kit in a casket that contained a set of different lens elements in rings, plus a lens barrel with inbuilt variable iris diaphragm. The user could put one lens element ring onto each opening of the lens tube, and could remove the lens elements to use another combination of elements instead. With this lens kit the user had a kind of variable lens, with just the inconvenience of unmounting, disassembling, reassembling and remounting for each change of lens focus. The kit can be seen as a versatile variant of the convertible lens concept.