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I try to recreate the circular distortion of an anamorpic lense like here

enter image description here

enter image description here

I know about this way to strech the bokeh vertically. Bokeh - From Horizontal to Vertical

and i have seen this one were a fisheye lense is used. https://code.blender.org/2014/08/anamorphic-bokeh/

and im using a lens distortion node in the compositor to achive additional realism. Is there a way to create this circular distortion in the bokeh without a fisheye camera?

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You can probably use radial blur to simulate the effect of lens aberration in post-processing.

But the effect is also surprisingly easy to achieve in Cycles with the camera. Just add a black, circular aperture object in front of the camera:

enter image description here

enter image description here

Here is the setup from the camera's perspective. The more closed off the circle is, the heavier the vignetting: enter image description here

Blend file Download

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  • $\begingroup$ I dont get this to work somehow. Do you let the camera clip through the object or not ? $\endgroup$ – Jens Clar Feb 15 '18 at 1:09
  • $\begingroup$ Added more detail to the answer, hopefully that answers your question. $\endgroup$ – Mike Pan Feb 15 '18 at 2:23
  • $\begingroup$ Thanks for the Blendfile. It works. :))) But you have to put the aperture really close to the camera $\endgroup$ – Jens Clar Feb 15 '18 at 3:27

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