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Pentax smc DA 50mm f/1.8 lens review: accessible price and excellent aberration control - DXOMARK
75 bucks worth? -> Pentax SMC DA 50mm f/1.8 K-mount with uv filter' - PentaxForums.com
Pentax 50mm f/1.8 DA Review
Pentax 50mm f1.8 DA Lens
SMC PENTAX-da 50mmF1.8 Medium Telephoto Lens Focal Length 76.5mm (Equivalent To 35mm Format) Bright Open F Value and Round Iris Diaphragm Beautifl Bokeh suitable for Portraits, Snapshots Lightweight: Amazon.co.uk: Electronics & Photo
Pentax smc DA 50 mm f/1.8 review - Introduction - LensTip.com