Mr. Jun Hirakawa (平川純) is a Japanese lens designer best known for creating the Pentax FA 43mm Limited and FA 77mm Limited lenses during his time at Pentax.[1]
Hirakawa said at the time that he regretted his "early retirement" from Pentax in 2010, around the time that Hoya acquired the company, and was subsequently hired by Tamron.[2]
Hirakawa is credited with designing:
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: Cite uses generic title (help)
DA* |
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DA |
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DA Limited |
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D FA and D FA* |
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FA Limited |
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FA* |
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FA and FA J |
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F and F* |
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A and A* |
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M and M* |
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original K-series |
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Special |
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Image circle: Abbreviations: Glass: AL (aspheric lens) - ED (extra low dispersion lens) Coating: smc (super multi coating) - HD (high definition coating) Sealing: WR (weather resistant) - DA* (lens is sealed) - AW (All Weather) Features: PZ (Power Zoom) - QS (Quick Shift, most DA & all D FA lenses) - RE (retractable lens barrel) - digital aperture control (with PLM lenses on KAF4)) - IF (Internal focusing) See also: Pentax K-mount lenses |