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Leica summicron m 28mm f 2 asph vs leica elmarit m 28mm f 2 8 asph?

Both are 28mm manual-focus primes for Leica M bodies, and they fit the same list of cameras, so the choice comes down to the lens itself.

I'd take the Leica Summicron-M 28mm f/2 ASPH if you shoot in dim streets or want a little more background separation. Its f/2 aperture is a full stop brighter than the alternative.

I'd take the Leica Elmarit-M 28mm f/2.8 ASPH if you carry your camera all day. It's one of the smallest M lenses, and for most street work in decent light, f/2.8 is plenty. If you're still deciding on a focal length, the Street page explains what 28mm asks of you.

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