The Petzval lens design has been around since the 1840's and is best known for creating a crisp center area of focus while rendering the surrounding area with an out-of-focus swirly bokeh. Almost like the bokeh has decided to do a little pirouette. While the pursuit of perfect optics in modern lens design would seemingly have made this type of lens obsolete, I find it quite compelling even with it’s tendency to generate chromatic aberration and heavy vignetting. For this reason, when Lensbaby decided to release their own take on the Petzval lens, the Twist 60, I bought it the first time they offered it at a significant discount. While I'm still learning to this manual focus lens, if I continue to get good results, I’ll be posting more from this little lightweight optical wonder soon!
