Carl Zeiss Jena Prokinar 50mm f1.4

A small projector lens (42.5mm barrel) converted to Sony Mount.
RAFCamera 42.5mm to M52x1 thread adapter
Yeenon M52 to M42 Focusing Helicoid Adapter 17.5-32.5mm
M42 to Sony E-mount Ultra Slim Adapter (for Helicoids).. I glued a 40mm LH-X10 Metal Lens Hood meant for Fuji X10 camera to the front so it can accept filters as well. lens vignettes slightly on FF A7R near infinity. Lens has a noticeable barrel distortion +8 in Photoshop fixes it. Busy swirlish bokeh.

Photo taken by Songkran


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