Overview

The Sigma Mirror Tele 1000mm f/13.5 is a compact, lightweight catadioptric lens offering extreme reach in a portable package. Optically, it delivers acceptable sharpness in the center but suffers from low contrast, strong vignetting, and a fixed f/13.5 aperture that limits low-light use. Build quality is typical for a mirror lens, with a manual focus only design and a distinctive donut bokeh. It suits photographers needing an affordable super-telephoto for bright conditions, such as wildlife or moon shots, but not for critical work or low-light scenarios.