Changes In Aberrations Due To Focusing And Their Elimination

Eiichi Takano

doi:10.1117/12.959120

16 September 1980 Changes In Aberrations Due To Focusing And Their Elimination

Eiichi Takano

Proceedings Volume 0237, 1980 International Lens Design Conference; (1980) https://doi.org/10.1117/12.959120
Event: 1980 International Lens Design Conference, 1980, Oakland, United States

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.

Citation Download Citation

Eiichi Takano "Changes In Aberrations Due To Focusing And Their Elimination", Proc. SPIE 0237, 1980 International Lens Design Conference, (16 September 1980); https://doi.org/10.1117/12.959120

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