Various cheap alternatives to Trioplan; lenses producing soap bubble bokeh on Nikon D800 and Sony A7: Adapted Lens Talk Forum: Digital Photography Review
Soapbubble Bubble bokeh and floral abstracts photographed with Meyer Optik Gorlitz Trioplan 100/2.8 II lens Stock Photo - Alamy
The Cheap Lens With AMAZING Soap Bubble Bokeh - YouTube
Talk about crazy, Soap Bubble Bokeh! | Mu-43
Meyer-Optik-Görlitz launches a new “soap bubble” focused Trioplan 100mm f/2.8 E-mount lens. – sonyalpharumors
Amazon.com : TTartisan 100mm F2.8 Full-Frame Soap Bubble Bokeh Lens, Compatible with M42 Mount Cameras : Electronics