Hands-on with the Pentax K-S1: Digital Photography Review
Amazon.com : New 0.43x High Definition Wide Angle Conversion Lens for Pentax K-S2 (Only for Lenses with Filter Sizes of 49, 52, 58, & 62mm) : Electronics
Pentax K-S2 review: The K-S2 is a solid first-dSLR option if you don't care about video - CNET
Amazon.com : Wasabi Power Battery for Pentax D-LI109 : Digital Camera Batteries : Electronics
Amazon.com : Pentax K-S2 20MP Wi-Fi Enabled Weatherized SLR Body Only (Black/Orange) : Electronics
Amazon.com : Pentax K-S2 20MP Wi-Fi Enabled Weatherized SLR Body Only (Black/Orange) : Electronics