From Manufacturer
Bundling a pair of optics with a pair of extension rings for close focusing applications, the Lensbaby Edge 80 and Sweet 50 Optics with Macro Converter Extension Rings Kit from B&H includes a suite of options for producing creative selective focus imagery from a variety of shooting distances and perspectives.
The Edge 80 is an 80mm f/2.8 flat-field optic featuring an adjustable 12-blade diaphragm in order to produce a slice of sharp focus within a field of soft blur. The degree and direction of focus can be adjusted within a lens body, and a minimum focusing distance of 17" is well-suited for close-up shooting. Providing a wider field of view, the Sweet 50 is a 50mm f/2.5 optic and also features a 12-blade diaphragm for producing a sweet spot of focus within a blurred frame. Both optics are compatible with, and require, the addition of a lens body for use on DSLRs or mirrorless cameras. These lens bodies offer control over the positioning of the in-focus region as well as adjustment of the shape, degree, and direction of focus.
Complementing both of the optics, this kit also includes the Macro Converter Extension Rings set, which features both 8mm and 16mm ring that can combine to create a 24mm ring. These rings are compatible with all Lensbaby lens bodies and reduce the minimum focus of optics for photographing at 8.13" or closer.
The Lensbaby Edge 80 Optic is an 80mm f/2.8-22 flat field optic with an adjustable 12-blade aperture. This optic is specifically designed to be used in conjunction with a Lensbaby lens body to give you a slice of sharp focus, surrounded by soft blur. The size of the in-focus region varies depending on the aperture and the location of it can be modified by the degree and direction of tilt. The selective focus effect produced is especially desirable for close-up photography, as this lens can focus as close as 17" / 43.2cm when fully extended.
This optic is composed of 5 multi-coated glass elements within 4 groups and the 12 rounded aperture blades produce an extremely smooth bokeh. It is compatible with the Lensbaby Composer Pro, Composer, Muse, Scout, and Control Freak lens bodies (Not compatible with the Composer with Tilt Transformer for Micro Four Thirds and Sony NEX cameras).
The Lensbaby Sweet 50 Optic is made for use with the Composer Pro, which can be bought separately, or used interchangeably with the Sweet 50 if you own it already with a different optic. It is a selective focus lens that uses a curved field of focus optic to create a blurred effect around the focus spot.
The 50mm focal length lens has two multi-coated glass elements in one group, and an aperture range of f/2.5 to f/22. The 12-blade internal aperture is easily controlled via a ring on the front of the optic. The sharp sweet spot of focus can be moved within the frame by tilting the Composer Pro's ball-and-socket joint. The size of the sweet spot is also controlled by changing the aperture.
Lensbaby's Macro Converter Extension Rings for Lensbaby lets you take that Lensbaby look as close to your subject as you want--even touching it in some cases--and get a picture that's in focus. You can choose the 8mm ring, the 16mm ring (both included), or combine them for a 24mm ring, so you have plenty of control over exactly how close-up you want your photo to be.
The converters are compatible with all Lensbaby lens bodies and optics, and provide focus distances of 0" to 8.13", depending on the optic, the camera, and the converter(s) you use. The Macro Converters simply screw into the Lensbaby lens body and the optic screws into the converter. The converters are compatible with Composer, Composer Pro, Muse, Scout, Control Freak and all optics (the Fisheye Optic is only compatible with the 8mm converter, as it allows you to actually focus on a subject that the lens is touching).