Minolta MC Rokkor PF 55mm f1.7

     This is a great lens to use on a mirrorless body.   Focusing is easy, yes easy.    Focus dampening and focus throw are perfectly balanced.  Aperture clicks are positive and quiet.   

     It is very sharp from F1.7 thru f16.    Corner sharpness is excellent.

     Low contrast bokeh is consistent thru all apertures.   Highlight bokeh is hexagonal at f5.6 & up.

     Contrast is excellent at all apertures and color rendition is slightly cool   

     Fringing is very well controlled.   I noticed a small amount on overexposed white subjects.    Bokeh fringing is subdued and well controlled.

     Flare is well controlled.   
     I would put this lens in the same category as the SMC Takumar 50mm f1.4 and the Contax Planar 50mm f1.7.     This is a great lens to just walk around and shoot with.   It's not too bulky nor too heavy, but is built very well nd the optics are superb

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ISO 400 - f1.7 

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ISO 400 - f4

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ISO 400 - f1.7 - 100% crop

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ISO 2000 - f11

Flare

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ISO 400 - f5.6

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ISO 400 - f1.7 - 100% crop

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ISO 400 - f5.6 - 100% crop

little fringing.

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ISO 1600 - f2.8 - 100% crop

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ISO 400 - f5.6 - 100% crop

Harsh Light

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ISO 400 - f4

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ISO 400 - f1.7 - 100% crop

ISO 400 - f1.7 - 100% crop