Best lenses for the 16-MPix Pentax K-5 II and K-5 IIs: Measurement data now available onlineBy Kevin Carter - Thursday January 30 2014 Lens Recommendations
Using our industry standard tests we compared the sharpness data on the best performing lenses between the Pentax K-5 II and K-5 IIs. While the data varies somewhat depending on the lens, we were able to see an improvement in peak sharpness (quantified in P-Mpix as a reduction in image sharpness from the maximum potential of the sensor - in this case 16-Mpix).
Although the best performing lens was the Sigma 35mm f1.4 DG HSM A, which achieved a peak sharpness figure equivalent to just under 13P-Mpix on the Pentax K-5 IIs, and 10P-Mpix on the K-5 II - all of the lenses listed above achieved an increase of 25%. If your lens isn’t listed, you can compare the data online.