Lens Review: Leica Summaron-M 28mm F5.6 (Leica M Mount) - The Phoblographer
Leica Announces Summaron-M 28mm f/5.6 - The Compact Classic Reborn | Red Dot Forum
Leica Summaron-M 28mm f/5.6 Review | PCMag
Leica Summaron-M 28mm f/5.6, silver chrome - Overview | Leica Camera US
Lens Review: Leica Summaron-M 28mm F5.6 (Leica M Mount) - The Phoblographer
Amazon.com : TTArtisan M 28mm F5.6 Full Frame Large Aperture Camera Lens with Lens Hood for Leica M Mount Camera M2 M3 M4 M5 M6 M7 M8 M9 M9P M10 : Electronics
Leica Summaron-M 28mm f/5.6, silver chrome - Overview | Leica Camera US