Get Leica 28mm f/2 Summicron-M ASPH at B&H Photo.
Last night I shot six A/B comparisons between the Leica 28mm f/2 Summicron-M ASPH (2016) and its 28/2 predecessor. All six comparisons showed the same consistent behavioral differences.
I chose two of the comparisons to compare and contrast the old and new optical behaviors:
Leica 28mm f/2 Summicron-M ASPH Focusing Behavior in Live View vs Predecessor
Includes full resolution images from f/2 through f/8 or f/11.
For anyone considering the 2016 Leica 28mm f/2 Summicron-M ASPH (for the first time or as an upgrade), this analysis should be a huge jumpstart on understanding how to achieve optimal results.
Leica 28mm ƒ/2 Summicron-M ASPH: 2016 model (right) and its predecessor (left)
f5.6 @ 1.0 sec, ISO 200; 2016-02-10 19:08:19[low-res image for bot]
LEICA M (Typ 240) + Leica 28mm f/2 Summicron-M ASPH