Here’s a quick look at how I created some homemade “petzval swirl” bokeh that mimics photos taken with the new Petzval 58 Bokeh Control Art lens.
Basically, on my 50mm 1.8 prime lens (yes, changing the focal length will mess this up!) I cut a small hole in light-proof paper over my lens hood, and taped it together, to produce some cheapo Petzval... more