Experience Essential Lensbaby, Pro Effects Kit for Nikon F. Take high-quality photos for creative effects with these products. There is no electronic communication between the lens and the camera body. Composer Pro Specs: Refined design Metal ball mount offers ultra-smooth focusing and tilt control. Supplied with the Sweet 35 Optic installed COMPATIBLE WITH THE Lensbaby Optic Swap SYSTEM. Focus Type: Manual Size/Weight: 2.25" (5.71 cm) H x 2.5" (6.35 cm) W/4 oz. (113.4g) tilts, zero to 17.5 degrees. Sweet 35 Optic Specifications: Range Length: 35 mm 12-blade internal aperture dial, controlled by in-front fiber optic. Aperture ranges from f/2.5 through f/22 Selective Focus optics (creates a sweet spot of focus surrounded by gradual blur). Centers from approximately 7.5" to infinity from the front of the fiber optic when used with Composer, 6.5" with Scout, and 3" coated glass elements of Muse and Control Freak 4 optically, in three groups of 46 mm Thread (Only works with the Lensbaby Macro Converter and not the 37mm Lensbaby accessories.) Edge 80 Optics Specifications: Focus Length: 80mm 12-blade internal aperture dial, controlled by in-front fiber optic. Aperture range from f/2.8 through f/22 flat field of focus optics (when tilted, creates a slice of shart focus, bordered by blur.) Minimum focus distance: APPROX 17" when the Extended fiber optics forward in macro mode and is fully tiltable. Maximum focusing distance: INFINITY 5 multi-coated glass elements, in groups of four 46mm Front thread (only works with the Lensbaby Macro Converter and not the 37mm Lensbaby accessories). Specifications Macro Converter: The Lensbaby Macro Converters includes an 8 mm converter and a 16 mm converter. Stacked together they become a 24mm converter. Compatible with all Lensbaby lens and optical bodies. Bag