Overview

The Rokinon 500mm f/8.0 is a compact, lightweight mirror lens (12.7 oz, under 3.5" long) with a fixed f/8 aperture and manual focus. Its optical quality is poor; users report it is not very sharp and requires exposure compensation of -1 2/3 to improve images. Focusing is tricky, and the lens is considered a cheap third-party mirror lens that underperforms compared to alternatives from major manufacturers. It suits budget-conscious photographers seeking an ultra-telephoto reach for stationary subjects like the moon, but its limitations make it unsuitable for critical work.