Lensbaby 3G Canon EF mount SLR Camera Lens (LB3GC) Flexible, selective focus lens that, unlike the Original Lensbaby and Lensbaby 2.0, has locking and fine focusing capabilities This 50mm lens with a coated optical glass doublet captures images with one area in sharp focus, with that "sweet spot" Magnetically suspended disc aperture system allows f/2.0, f/2.8, f/4, f/5.6, f/8.0, f/11, f/16, f/22 aperture settings 38 mm threads allow you to attach Lensbaby Macro Kit lenses, wide angle and telephoto conversion lenses, and other filters and accessories Note: Lensbaby does not communicate electronically with your camera body