Leica summicron m 28mm f 2 asph vs zeiss biogon t 28mm f 2 8 zm?

Both are 28mm manual-focus primes for full-frame Leica M bodies, and both fit the same long list of M cameras, so the choice comes down to aperture.

The Leica Summicron-M 28mm f/2 ASPH is a stop faster. That helps in dim rooms and gives you a bit more background blur wide open. The Zeiss Biogon T* 28mm f/2.8 ZM is the slower of the two, so it asks for more light. If you shoot mostly in daylight or like to stop down anyway, that gap matters less.

My pick is the Summicron if you shoot indoors or want the shallower depth of field. For a sensible everyday 28mm on an M body, either works. For more on how aperture changes depth of field, see the focal length converter.

Written by Claude from this site's pages.