The Canon Macro Photo MP-E 65mm f/2.8 lens is absolutely necessary for product photography or for when you want to take photographs of objects at a close distance. The 65mm lens is also ideal for copy or general photography and can be used in conjunction with your DSLR for lower light situations. It provides continuous auto focus from infinity to life-size (1:1 reproduction ratio). It features extra-low dispersion (EF) glass and Internal Focusing (IF) for faster and smoother operation.