Replaces the Original Lensbaby. Compatible with Canon EF (EOS) Cameras.Bend it Baby! The Muse captures the spirit of Lensbaby photography, opening up a new realm of fun in focusing. Squeeze the Muse to focus, and bend your Sweet Spot around the photo.Like the Composer and the Control Freak, this little baby comes with Lensbaby's Optic Swap System, offering artists an almost unlimited variety of looks and styles to capture their unique visions.The Muse comes in two flavors. You can buy the Muse with the tack sharp Double Glass optic installed or get dreamy with the Plastic Optic version. Your choice!How to UseGet loose with the Muse. Focus by squeezing the focusing collar with your fingertips. Move the Sweet Spot of focus around the picture by bending the lens in any direction. A guaranteed out of the box experience.To change your aperture, simply touch the tip of your Aperture Removal Tool to the aperture disk and lift it out. Then drop a new aperture disk into the lens. The disk will float above the optic in a shielded magnetic field.Note: No electronic communication between the lens and the camera body. Automatic light metering is possible by shooting in aperture priority mode for almost all digital and film SLR camera bodies except certain Nikon bodies including the D40, D50, D60, D70, D70S, D80, D90, D100, N50, N65, N70, N75, N80, & Fuji S1, S2, and S3.