Photographer Mathieu Stern of the Bizarre Lenses Museum has revealed one other video showcasing an outdated projector lens used with a 3D-printed adapter to shoot a video that includes stunning, loopy — and on this case, swirly — bokeh.

As with the projector lens video Stern revealed earlier this yr, the most recent mission entails an outdated projector lens designed for cinema projectors. Stern explains on YouTube that he paid €2 for the lens at a flea market, later figuring out that it’s an ‘extraordinarily uncommon’ Cinestar 75mm F1.9 mannequin.

Stern used a 3D-printed adapter to insert the lens right into a helicoid ring, enabling him to focus the lens. The ring was then used with an M42 to E-mount adapter to be used with a Sony A7III digicam. The outcome, Stern says, ‘Is essentially the most wonderful swirly bokeh I [have ever] seen.’

Stern showcases a variety of uncommon lenses on his web site, together with one which he made utilizing ice from an iceberg.