Get Leica 28mm f/2 Summicron-M ASPH at B&H Photo.
Significant focus shift inflicts serious damage to image sharpness where intended/desired and thus makes obtaining optimal results on high-res digital cameras much more challenging.
I’m often asked “which lens is sharper”. This is a complex question that involves many factors, but focus shift is the elephant in the room with some lenses, ignored when talking about sharpness.
Accordingly, one of the first things I check for with any new lens is focus shift, because it’s so critical a factor. This assessment is at minimum object distance (MOD) with the 2016 version of the Leica 28mm f/2 Summicron-M ASPH: