Anamorphic bokeh

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that.skpguy
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Anamorphic bokeh

Post by that.skpguy » Mon Aug 30, 2021 4:14 pm

I've figured out how to render an oval bokeh and naturally occurring vignette with it. straight in render without any post-processing:
bokeh-oval.jpg
bokeh-oval.jpg (2.15 MiB) Viewed 6466 times
And here's a regular circular bokeh:
bokeh- circle.jpg
bokeh- circle.jpg (2.07 MiB) Viewed 6466 times
Nevermind the foreground model, that's not important.

Fletch
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Re: Anamorphic bokeh

Post by Fletch » Tue Aug 31, 2021 7:19 am

Looking cool! Sounds interesting, please tell us more. :)

that.skpguy
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Re: Anamorphic bokeh

Post by that.skpguy » Tue Aug 31, 2021 2:51 pm

Sure, I saw this vid here: https://www.youtube.com/watch?v=x3iOzWL_Kbw

And realised that if I made an oval cutout and place it right in front of my camera, the bokeh will naturally take on the shape, just like in real life if you do the same. Like so:
Screenshot 2021-08-31.png
Screenshot 2021-08-31.png (263.95 KiB) Viewed 6443 times
And here's one where I test the setup in a proper scene:
Cinematic bokeh.jpg
Cinematic bokeh.jpg (1.16 MiB) Viewed 6443 times

Chris
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Re: Anamorphic bokeh

Post by Chris » Tue Aug 31, 2021 7:06 pm

I had to try it for myself. :D It totally works. I made a heart shaped cutout.
Attachments
hearts.png
hearts.png (444.18 KiB) Viewed 6435 times

that.skpguy
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Re: Anamorphic bokeh

Post by that.skpguy » Wed Sep 01, 2021 4:32 am

That's amazing!
I only wish now that twilight has more dropdowns for the iris shape, in addition to just circular and polygonal. Maybe custom? Just a suggestion.

Fletch
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Re: Anamorphic bokeh

Post by Fletch » Wed Sep 01, 2021 8:44 am

It makes sense, since the camera is very similar to a physical camera, so the cinematic "tricks" for real world should work. :^:

Of course the newest post-processing dialog for Twilight Render is much quicker and easier to use, IMHO, than to build 3D modeling tricks around the camera.

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