Leica M: Which is the Highest Performing 28mm lens?
In Guide to Leica, this comparison of the Leica 28mm f/2 Summicron-M ASPH versus 28mm f/2.8 Elmarit-M ASPH might help decide for some shooters whether the diminutive 28/2.8 Elmarit is a good choice (I personally love its small size).
The comparison is on the Leica M9, but should apply to the new Leica M Typ 240 also.