Lensbaby Burnside 35

Manufacturer description: The first ever wide angle adaptation of the Petzval lens design, this 35mm F2.8 lens creates images with a large, bright central area of sharp focus and striking color rendition surrounded by variable, swirling bokeh and vignette. It also features an effect slider that operates as a second internal iris that changes the shape and amount of swirl in the bokeh; all while adding or removing vignette and center brightness.