Every ZM lens is basically faultless. This Biogon T* 2/35 ZM is another excellent lens that you can always depend on. The corners are a little dark and soft wide open, but they go away by stopping down just one f-stop. Distortion is almost invisible, and the bokeh is smooth in most case, while the back bokeh may have some halation in certain conditions. As shown in the sample above, it’s very majestic at a smaller aperture, yet it’s not hard. It’s very difficult to describe in words, but it captures some stagnation of air wide open (hence, it depicts the air of the scene). At smaller apertures, it captures light very clearly. It’s a great first normal lens for the R-D1 and the M8.