The Zeiss T lenses offer the highest possible level of performance, reliability, and image quality. For example, an extremely advanced aperture reduction is available, enabling sharp and brilliant images. The virtually non-existent geometric distortion ensures precise and accurate reproduction of shapes, which is particularly useful in product and architectural photography. The Zeiss T ZM bayonet lenses are designed to minimize the usual shift of the plane of focus when stopping down, an important and valuable innovation for rangefinder photography. This provides the user with greater accuracy when setting the distance through the rangefinder. The precise aperture with ten blades and click stops in 1/3 stops ensures exact exposure.

Photographers aim to guide the viewer through the image. A minimal plane of focus is often used as a design element by intentionally keeping the background out of focus to draw the viewer's attention to the main subject. ZM lenses feature apertures with ten blades that form a nearly circular opening, creating a particularly harmonious effect in the out-of-focus areas of the image (bokeh).

The manual adjustment of the lens allows for controlling the image results "at your fingertips." Ergonomic design is crucial in this regard. The focus ring on Zeiss lenses is optimized for quick, precise lens adjustment thanks to user-friendliness and an ergonomic finger rest. Changes are immediately visible in the viewfinder. The connection and controls of the ZM lenses are made of metal and are designed for decades of intensive use. The high-quality craftsmanship of the full metal connections, the textured metal focus and aperture rings, as well as the robust front bayonet and filter thread ensure a fantastic photography experience.