Best lenses for your Pentax K-50: Pentax lens overviewBy Kevin Carter - Thursday August 22 2013 Lens Recommendations
As we’ve seen with other makes the Sigma 35mm f/1.4 DG HSM A is the best performing lens of its type and of the 28 lenses models that we’ve analyzed on the Pentax K-50. As the equivalent to a 50 mm or thereabouts it’s a large and heavy lens but the image quality is terrific. Note that we’ve not yet assessed the Pentax 31mm f/1.8, 43mm f/1.9 or the 77mm f/1.8 Limited models.
If you’re looking for a similar angle of view of a 35mm on a APS-C camera, then you would need a 24mm, though Pentax currently offer only zooms that cover that focal length.
The firm’s Pentax smc DA 35mm f2.8 Macro Limited performs well but $700 it’s not the best value proposition in that focal length. The slightly faster 35mm f2.4 AL model is just $220 and scores 9P-Mpix in our Sharpness test, though bear in mind it lacks the sturdy metal construction and 1:1 life size reproduction capability of the macro model.
Wide-angle lenses don’t perform quite as well as the less demanding 50-85mm models, although the Pentax 21mm f/3.2 AL Limited scores quite well, with a DxOMark score of 15, and a Sharpness score of 9 P-Mpix.