The canon cn e85mm t13 l f cine lens is a short telephoto prime lens designed for handheld everyday shooting especially good in low light situations the well rounded 11 blade diaphragm provides a smooth attractive blur for elements in the image that are out of focus this lens has been designed for use with canons c series cinema cameras eos c100 c300 c500 and canons range of full frame dslrs with an ef mount such as the canon 5d mark iii 1d x and 1d c