Canon EF 50mm f/1.4 USM 2x Teleconverter (4 Elements) with Nwv Direct Microfiber Cleaning Cloth

A 2x (doubler) teleconverter built with 4 optical elements that doubles the effective focal length of any high-quality lens it’s attached to. Designed to retain image detail and preserve contrast, it keeps resolution and tonal quality at a high level when used with fine optics.