The Lensbaby Composer Pro With Sweet 35 Optic is part of the Lensbaby series of SLR lenses, and offers the same spectacular special-effect results. However, the refined and enhanced Composer Pro gives you ultra-smooth focus and tilt control and will retain its position after being bent, which makes it easy to use even with one hand. Simply tilt the lens to a desired angle and then focus with a traditional barrel focusing ring. The Sweet 35 Optic is a 35mm optic with a 12-blade diaphragm and adjustable aperture (f2.5-f/22) that gives you unprecedented precision control over your selective focus photos--just rotate the dial on the front of the optic to quickly change the size of your in-focus "sweet spot". This is the widest focal length of any Lensbaby selective focus optics--the Sweet 35 also has close-focus capabilities. The lens can be bent off-center in any direction for different results.