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All hail hypnopigeon, our new glorious overlord and spiritual liege.
Crazy effects from a Sigma 50-100mm f/1.8A on a Kenko Pro 300 1.4x TC + Speedbooster Ultra, which negate out in the end.
The Sigma actually produces beautiful, smooth bokeh. That combination of the TC, the fauna, the focal length and being wide open at f/1.8A produces this really, really wild looking, unusual, trippy and swirly bokeh.
no cream here, at all!
Exceptionally nervous bokeh created by closely spaced vegetation pattern just at the right distance in the OOF area, with a Pentacon 50mm f1.8 wide open View attachment 527332spiky confusion by gnarlydog, on Flickr
A rather ordinary lens (Takumar 55mm f2) can produce an interesting bokeh. Here I positioned myself behind some thin stalks of grass (close to the lens) and the out of focus area behind the main subject became wavy-textured