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yazhuge:A Celor lens is a highly corrected lens of the Dialyt type, designed for process photography, involving reproduction at or near 1:1 scale. (2014-05-15 22:17) G q:4rG|
kimclps:是指Celor type的鏡頭吧。光闌(stop)在中間,兩側的透鏡完全對稱。4片時,光闌為第5面, 9QOr,~~s r1=-r9 r2=-r8 r3=-r7 r4=-r6 d1=d8 d2=d7 d3=d6 d4=d5 n1=n8 n3=n6 .. (2014-05-15 21:56) dE5 5
瑛荧:意思就是完全对称的1:1中继就叫Celor lens? (2014-05-29 15:19) x1 ;rb8
kimclps:Celor是一種鏡頭型式的名稱,1898年Goertz公司發表,+ - - +架構。使用在1:1影印、製版時才用 ]F*|U` 完全對稱,有畸變(distortion)、倍率色像差(lateral color)對消的優點,但彗星像差(coma)則不易完 >g=^,G}y 全消除。當年發表是用於攝影,因此當時是準對稱而非完全對稱。 n.@#rBKZ (2014-06-01 18:51) %=y;L:S\p