The 135mm f/2.0 ED UMC Lens for Canon EF Mount from Rokinon is a manual focus telephoto prime lens useful for portraiture and all medium telephoto applications. Its fast f/2.0 maximum aperture is effective in low light and enables shallow depth of field control. With a rounded 9-blade diaphragm, shallow depth of field imaging will be rendered with pleasing out-of-focus highlights. Compatible with both full frame and APS-C format DSLRs, this lens provides a 35mm focal length equivalence of 202.5mm when used on APS-C cameras. Its minimum focus distance is 2.6'. | Rokinon | | 135mm F2.0 ED UMC Telephoto Lens for Canon EF Digital SLR Cameras, | Black | Best Buy