Mar 07, 2017 · The Pentax-FA 50mm f/1.7 is crazy sharp, with nice bokeh to boot. Much better than the f/1.4 lens, but much harder to find used. With the high ISO capability of the K-1, you won't miss the half stop of speed. The Pentax-FA 100mm f/2.8 macro also has an incredible reputation for sharpness. Rather heavy, but macro lenses need a long focusing helical. Pentax K-1 | ▤ Full Specifications: Sensor type: CMOS, Image sensor format: Full frame, Sensor size: 35.9x24, Sensor photo detectors: 37 Pentaxians have probably been rejoicing since the launch of the Pentax K-1 - a full-frame DSLR camera that has been more than a decade in the making.For...