Testing a $12 Zeiss Lens for Full Frame

This is a quick test of my $12 Zeiss Jena Tessar 50mm f2.8. The footage have just been slightly graded and no sharpening has been added. Wanted to keep it low contrast to show its potential.
Shot on A7ii.
Overall I like the lens. Its rather small, well built and of course very cheap.
Its an m42 so it can mount to just about any camera.