Panasonic Lumix DC-S1 review: Digital Photography Review
Review: Panasonic Lumix S1 - Australian Photography
Panasonic S1 review: A perfect camera, except for its autofocus system | Engadget
Lumix S1 Mirrorless Camera Hands-on Review
Amazon.com : Panasonic LUMIX S1 Full Frame Mirrorless Camera with 24.2MP MOS High Resolution Sensor, 24-105mm F4 L-Mount S Series Lens, 4K HDR Video and 3.2” LCD - DC-S1MK : Electronics