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Proceedings Paper

Continuous Close Focusing Telephoto Zoom Lenses
Author(s): Ellis I. Betensky; Melvyn H. Kreitzer; Jacob Moskovich
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Paper Abstract

Compact telephoto zoom lenses with continuous close focusing have been designed for 35mm photography. These lenses are less complex optically and mechanically than previous design types.

Paper Details

Date Published: 16 September 1980
PDF: 8 pages
Proc. SPIE 0237, 1980 International Lens Design Conference, (16 September 1980); doi: 10.1117/12.959119
Show Author Affiliations
Ellis I. Betensky, Opcon Associates, Inc. (United States)
Melvyn H. Kreitzer, Opcon Associates, Inc. (United States)
Jacob Moskovich, Opcon Associates, Inc. (United States)

Published in SPIE Proceedings Vol. 0237:
1980 International Lens Design Conference
Robert E. Fischer, Editor(s)

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