Originally posted by Sandy Hancock I am not yet worthy of your thanks. But I will try when the lens arrives; the lens will do the talking though.
And Hirakawa did not design the FA31 by the way
Yes, i know it...
Precisely smc fa 31mm Limited was an update design of Mr. Ito, Takayuki (伊藤 孝之) and Mr. Murata, Masayuki (村田 將之) on originally designed FA31/2.4 of HIRAKAWA, based itself on the optical formula of the old SMC 30mm F2.8
Jun Hirakawa has designed too the FA☆85mm f1.4 :
https://patentimages.storage.googleapis.com/6d/72/ab/b20d043420abbb/US5172274.pdf
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"the lens will do the talking though."
I believe that too ... 😉
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Intentions and quality:
https://download.ru/files/dNVNZiMI
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Who are the engineers of this new 85mm ? Are there drawings ( patent, service part list, exploded diagrams ) on the net ?