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Anastigmat
An anastigmat or anastigmatic lens is a photographic lens completely corrected for spherical aberration, coma, and astigmatism. Early lenses often included the word ''Anastigmat'' in their name to advertise this new feature (''Doppel-Anastigmat'', ''Voigtländer Anastigmat Skopar'', etc.). All modern photographic lenses are close to being anastigmatic. The first Anastigmat was designed by Paul Rudolph for the Carl Zeiss AG in 1890.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Anastigmat」の詳細全文を読む
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