Amazon.com : OM SYSTEM OLYMPUS M.Zuiko 17mm f1.8 (Black) for Olympus and Panasonic Micro 4/3 Cameras - International Version (No Warranty) : Camera Lenses : Electronics
Review: The Olympus M.Zuiko 17/1.2 PRO – Ming Thein | Photographer
Leica 15mm f/1.7 vs the Pana-cakes - Olympus Passion
Panasonic LUMIX G 25mm F1.7 ASPH Micro-Four-Thirds mount lens review: Attractive option - DXOMARK
Comparative lens review: The Olympus M. Zuiko Digital 17/1.8 – Ming Thein | Photographer
Quick Comparison: Olympus 17mm f1.8 vs. Panasonic 20mm f1.7 - The Phoblographer
Amazon.com : Panasonic LUMIX G II Lens, 20MM, F1.7 ASPH, MIRRORLESS Micro Four Thirds, H-H020AS (USA Silver) : Compact System Camera Lenses : Electronics
Amazon.com : OM SYSTEM OLYMPUS M.Zuiko 17mm f1.8 (Black) for Olympus and Panasonic Micro 4/3 Cameras - International Version (No Warranty) : Camera Lenses : Electronics
Amazon.com : Panasonic LUMIX G Leica DG Summilux 15mm f/1.7 ASPH Micro Four Thirds Lens Mount Wide-Angle Camera Lens (Black) + 5 Piece Essentials Accessory Kit : Electronics
Panasonic Leica 15mm f/1.7 or Olympus 17mm f/1.8: Micro Four Thirds Talk Forum: Digital Photography Review
Quick Comparison: Olympus 17mm f1.8 vs. Panasonic 20mm f1.7 - The Phoblographer
Amazon.com : Panasonic Lumix G H-H020 20mm f/1.7 Aspherical Pancake Lens for Micro Four Thirds Interchangeable Digital SLR Cameras : Compact System Camera Lenses : Electronics
Amazon.com : Panasonic Lumix G H-H020 20mm f/1.7 Aspherical Pancake Lens for Micro Four Thirds Interchangeable Digital SLR Cameras : Compact System Camera Lenses : Electronics
Panasonic LUMIX G 25mm F1.7 ASPH Micro-Four-Thirds mount lens review: Attractive option - DXOMARK