Overview

The Pentacon 135mm f/2.8 preset lens, especially the 15-blade version, is praised for its smooth, creamy bokeh and vibrant colors. It is sharp at f/2.8 and improves when stopped down. Build is solid metal with a retractable hood, but the 15-blade version can be wobbly. The 6-blade variant is cheaper but produces pentagonal bokeh. It suits portrait, flower, and macro photography, but manual focus requires patience. Overall, it offers vintage character at low cost.