SMC Pentax-M 40mm f/2.8 - Sample Images
Info and Reviews:
Introduced: 1976 - 1984
Optical design: 5 elements in 4 groups
Lens mount: Pentax K (PK)
Covers: Full-frame (24×36mm)
More info / Review:
http://www.pentaxforums.com/lensreviews/SMC-Pentax-M-40mm-F2.8-Pankake-Lens.html
http://cannonfastreviews.com/pentax-m-40mm-f2-8-smc/
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ISO: 100
Camera: Pentax K-5 II s
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ISO: 100
Camera: Pentax K-3
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ISO: 100
Camera: Pentax K-3
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Analog film: Fomapan 100
Scanner: MICROTEK ArtixScan F1
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ISO: 800
Camera: Pentax K-x
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ISO: 80
Camera: Pentax K-5
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ISO: 800
Camera: Pentax K-x
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ISO: 800
Camera: Sony NEX-3
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ISO: 125
Camera: Sony ILCE-7
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ISO: 100
Camera: Pentax K-x
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ISO: 100
Camera: Canon EOS 500D
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ISO: 100
Camera: Canon EOS 500D
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ISO: 80
Camera: Pentax K-5
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ISO: 100
Camera: Canon EOS 1000D
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ISO: 100
Camera: Pentax K-1
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ISO: 100
Camera: Pentax K-1