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Proceedings Paper

Changes In Aberrations Due To Focusing And Their Elimination
Author(s): Eiichi Takano
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Paper Abstract

With recent lenses, the focusing range has become increasingly wider, and so we have developed various methods to minimize aberration changes by focusing. As the result, the 500 mm F/8 catadioptric lens, the 300mm F/5.6 telephoto lens, the 90mm F/2.5 portrait/macro lens, the 70-210mm F/3.5-4 tele zoom lens, the 35-80mm F/2.8-3.5 standard zoom lens, etc. have been developed, which enable the camera man to execute conventionally difficult camera work.

Paper Details

Date Published: 16 September 1980
PDF: 8 pages
Proc. SPIE 0237, 1980 International Lens Design Conference, (16 September 1980); doi: 10.1117/12.959120
Show Author Affiliations
Eiichi Takano, Tamron Company, Ltd. (Japan)

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

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