Standard Zoom lenses for Pentax K-S1
The Pentax K-S1 utilizes the Pentax KAF2 mount & has a APS-C sized sensor. At this time, we have information on 3 Standard Zoom lenses that will fit the K-S1.
The K-S1 has a crop factor of 1.5 so you should multiply the lens focal length with 1.5 to get it's full frame equivalence. You can simply click the 
image to visualize how the lens fits the K-S1.
We have also designed an Advanced Lens Search so you are able to uncover your perfect lens.
ModelVisualizeFocal LengthApertureStabilizedWeight
Pentax smc DA 16-50mm F2.8 ED AL IF SDM16-50mmf/2.8 565g
Samsung D-Xenon 18-55mm F3.5-5.618-55mmf/3.5-5.6 225g
Apple Innovates by Creating Next-Level Optical Stabilization for iPhone
Samsung D-Xenon 16-45mm F416-45mmf/4.0 365g