Best lenses for your Pentax K-50: Pentax lens overviewBy Kevin Carter - Thursday August 22 2013 Lens Recommendations
The price of $650 is fast approaching that of $736 Pentax smc PENTAX DA Star 16-50mm f2.8 ED AL (IF) SDM that’s not only more versatile, and slightly faster but performs similarly (scoring an average of 9P-Mpix and a DxOMark score of 16.
If price is an issue then consider the Pentax smc PENTAX DA 16-45mm f4 ED AL. It’s priced at $335, and scores 8P-Mpix and an overall DxOMark score of 17 points.
Both those models are the best performing zooms. Best value is the 18-55mm f/3.5-5.6 AL II starter lens but that’s often bundled with the camera.
If sharpness is the only criteria on which to make a judgment then the Pentax smc PENTAX DA Star 16-50mm f2.8 ED AL (IF) SDM comes out top of those analyzed. However, at less than half the price the similar 16-45mm (24-75mm equivalent) is the better performer overall (with a DxOMark score of 17 points, however it’s a stop slower at maximum aperture.