The amount of blurring and the tightness of the area that’s kept sharp depend on focus distance, aperture and the amount of tilt. This can make setting up shots quite complex, but it doesn’t take long to get a feel for things. The Sweet 50 can suffer from fringing at its widest aperture, but there’s less barrel distortion than from the Sweet 35. Lensbaby manufactures ‘Optic Swap’ systems, in which optics are available separately to insert into lens holders that mount onto the camera. In the past you’d have to remove optics from their holders in order to swap plates of varying aperture values, but the latest ‘Sweet’ optics have a built-in diaphragm and control ring that enables you to sweep through their entire aperture range of f/2.5 to f/22.
The Sweet 35 optic is made up of four glass elements in a high-quality plastic barrel that slots into a lens body like the Composer Pro holder (see the review of the Sweet 50, left, for details). It enables