Amazon.com : Olympus M.Zuiko 17mm f1.8 (Black) for Olympus and Panasonic Micro 4/3 Cameras - International Version (No Warranty) : Camera Lenses : Electronics
Amazon.com : TTArtisan 17mm F1.4 APS-C Manual Focus Wide-Angle Large Aperture Cameras Lens Compatible with Olympus M43 Mount Camera, Panasonic M43-Mount M43 Mount M4/3 Mount Camera : Electronics
Amazon.com : Olympus M.Zuiko 17mm f1.8 (Silver) for Olympus and Panasonic Micro 4/3 Cameras - International Version (No Warranty) : Camera Lenses : Electronics
APS-C 17mm F1.4 – TTArtisan
Amazon.com : Olympus M.Zuiko 17mm f1.8 (Black) for Olympus and Panasonic Micro 4/3 Cameras - International Version (No Warranty) : Camera Lenses : Electronics
Panasonic Lumix G 20mm F1.7 ASPH Review: Digital Photography Review