Overview

The Carl Zeiss Jena Sonnar 135 mm f/4 is a vintage telephoto lens with a storied design lineage. Optically, it renders colors pleasingly and has good resolving power, but focusing is critical and misfocus can reduce sharpness. Build-wise, the focus ring is stiff, making precise adjustment challenging. It suits photographers willing to work with manual focus for a distinctive look, but its demanding handling and risk of missed focus make it less ideal for fast-paced or critical work.