Turn your inner artist loose with this unique lens and have a ball. Just bend the lens to shift the focus plane as you wish, then turn the focus ring on the front to bring the main subject into focus. Throw a portion of the image a little out of focus, or a lot. You'll have you full selective focus control, but with a modified ball and socket design for easier use and more precision. Interchangeable aperture disks give you added control over depth of field. FEATURES INCLUDE: coated high refractive index multi-coated 50mm f2 doublet glass lens; full range of interchangeable apertures from f2 to f22; aperture disks held in place magnetically; focus range 18" to infinity; accepts interchangeable Lensbaby Optic Swap accessories; compatible with both 35mm and digital SLR cameras. Allow 1-2 weeks delivery for Pentax, Sony/Maxxum mount lenses.