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. Llike the Composer and the Control Freak, this little baby comes with Lensbaby's new 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. How To Use Get 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. Gallery   Specs Available in mounts for Canon EF (EOS), Nikon F, Sony Alpha A / Minolta Maxxum, Pentax K / Samsung GX, and Olympus E1 / Panasonic Lumix DMC cameras. Double Glass (Multi-coated Optical Glass Doublet) or Plastic Optic installedFocal Length: about 50 mmFocus Type: Manual/FingertipAperture Type: Interchangeable, magnetic aperture disksApertures: f/2, f/2.8, f/4, f/5.6, f/8Minimum Focus: about 12" (30cm)Maximum Focus: infinitySize: 2.25"(5.7cm) h x 2.5"(6.35cm) w / Weight: 3.7 oz (104.9g)No electronic communication between the lens and the camera bodyAutomatic 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.