Vivitar 800mm F80 DX Telephoto Mirror Lens 2x Teleconverter 1600mm For Sony EMount Alpha a6000 a5000 a5100 A

Able to bring distant objects close, the 800mm f/8 Telephoto Mirror Lens from Vivitar is an extreme telephoto lens in a lightweight, compact form. The advanced reflex mirror design of this lens makes possible its compact size and its aluminum alloy construction keeps it light and durable.
Super Spectra Coatings on the lens elements provide excellent light transmission and minimal flaring. Upgraded mirror design and quality optics allow this lens, which is a fraction of the size of most ultra-telephoto lenses, to offer sharp imagery and little color aberration, even under adverse lighting conditions.

The Vivitar 800mm f/8 lens is a great asset for any photographer, whether seasoned pro who appreciates its portable size or ambitious amateur exploring the creative potential of ultra-tele photography. This lens is compatible with almost every film and digital SLR camera and will allow you to reach focal lengths which normally require a large, expensive lens.
Note! Since a reflex lens is not equipped with a diaphragm system, the use of filters and the shutter speed control play an important factor in the control of light and contrast.
Ultra-telephoto range in a compact, lightweight form with advanced reflex design Super Spectra lens coatings provide even light transmission and minimize flaring