The Mamiya 645 Pro TL is a medium-format SLR camera made in Japan by Mamiya, part of a series that began in the mid-1980s. It makes fifteen 6x4.5 cm images on 120 roll film. Unlike Mamiya's 6x7 SLR cameras, it relies on helical focusing in the lenses rather than bellows. The camera body is made mainly from polycarbonate, a departure from the metal bodies of earlier M645 models. It shares the same bayonet lens mount and interchangeable film inserts with earlier M645 cameras, though viewfinders are not interchangeable between the series. The 645 Pro TL was eventually replaced by the auto-focus 645 AF series from late 1999.