The earlier Helios 44's are known for their crazy swirly bokeh. Reversing the front element will kick it up a notch! What you get is extreme optical vignetting, for a dream like effect.

The vintage nature of this Soviet lens seems to create a very analogue feel to footage.

Nikon D5200, 64mbps Hack, 1978 Helios 44M 58mm F2 KMZ edition, 1080p, graded in Premier Elements.