Ken Rockwell' Review: "This is the best 21mm lens available for Leica cameras for serious nature, landscape and architectural shooting" Focus and metering work perfectly with every Leica and similar camera. "This lens has no weak points......no reason not to get this lens unless you just don't like 21mm lenses" "This Voigtländer 21mm lens is the best 21mm lens ever made for Leica cameras, regardless of price.