3D Lens for Canon Digital Camera 3 3D Viewers are included. The NEW Stereo Lens-In-A-Cap is a 40 mm, f11 f22, 2 element lens in a break resistant polymer composite housing Up front, each lens portal is threaded for 58mm filters with a maximum outer diameter of 86mm The stereo base is 90mm between the two light paths The 300D has flash exposure bias disabled, but it is known that people have found ways to re-enable it Each NEW 3D Stereo Lens comes with two squeeze-snap Lens Caps, draw string Lens Bag, Loreo Lite. 3D Pixie, and mailable 3D Poste-Vue Viewers