PRODUCT HIGHLIGHTS: 0.5x Max Magnification Macro Focus Aperture has Range: f/2.5-32 EF Mount Lens Floating Optical System Depth and Distance of Field Scales Min Focus Distance is 9.1inches 6-Blade Spherical Diaphragm Optional Converter for 1:1 Macro Diameter of Filter Thread is 52mm DESCRIPTION: The EF 50mm f/2.5 Compact Macro Lens from Canon is a light in weight and compact in size 50mm macro lens for general purpose typical focal length shooting and for close-up size of 1:2 half life macro photography. A floating optical system lets sharp delineation at every focusing distance. With a big f/2.5 max aperture, the lens is efficient in low light and gives shallow depth of field and its in fact circular six-blade diaphragm provides stunning background blur. An optional Life Size Converter EF allows focusing to a right macro 1:1 reproduction ratio. A 50mm macro lens for use in general standard focal length shooting and close-up with ratio of 1:2 half life size macro photography Floating Optical System for the sharp imaging. Metal Filter Thread Compatible Life Size Converter EF allows focusing to an exact macro 1:1 reproduction ratio.