Lens Lab
    3M-5A-MC 500 mm f/ 8
    3M-5A-MC 500 mm f/ 8

    3M-5A-MC 500 mm f/ 8

    500mm · f/8

    Overview

    The MC 3M-5CA 500mm f/8 mirror lens is praised as the best mirror lens by some users, with comparisons to Tamron SP 500 f/8, Rubinar 500mm f/8, and Sigma 600mm f/8, where it is described as sharper and very well built. It is noted for being handheld at 1/400s. However, no weaknesses are mentioned in the excerpts. The lens suits those seeking a sharp, well-built mirror lens for telephoto work, particularly for subjects like the moon.