Premium Tamron SP mirror lens at 500mm for OM mount, quality compact super-telephoto above budget alternatives.
The Tamron SP 500mm f/8 Reflex is a premium mirror (catadioptric) super-telephoto in Olympus OM mount from Tamron's SP (Super Performance) line. The SP designation ensures quality construction above budget mirror alternatives, and the compact 500mm design folds the optical path for remarkable portability.
The mirror design achieves 500mm in a barrel roughly one-third the length of a conventional 500mm lens. The fixed f/8 aperture produces the characteristic doughnut bokeh, and the SP build quality provides smoother mechanical operation and better optical performance than budget mirror lenses.
Build quality is Tamron SP premium with quality construction, smooth focus ring, and the Adaptall mount system configured for Olympus OM. The compact dimensions make genuine 500mm super-telephoto reach practical for handheld and travel use where conventional designs would be impossibly large.
The Tamron SP 500mm f/8 Mirror offers quality mirror lens super-telephoto capability at moderate used prices. The SP build quality distinguishes it from cheaper mirror alternatives, and the compact dimensions make it one of the most portable 500mm options for OM-mount photographers.