aperture diffraction

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lape
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aperture diffraction

Post by lape » Fri Jun 16, 2017 9:51 am

Can anybody tell me how to use aperture diffraction to get some nice lense flares? Does not work for me...
Indigo v4.0.54
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aleksandera
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Re: aperture diffraction

Post by aleksandera » Fri Jun 16, 2017 10:20 am

Try path tracing with MLT :wink:
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thesquirell
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Re: aperture diffraction

Post by thesquirell » Fri Jun 16, 2017 1:17 pm

You'll need an obstacle map.

Luckily, it doesn't have to be power of two texture, so you could easily use whatever you find. Generated aperture shape always produces nice results, and there is not much difference between physical and post-process AD, except for the RAM usage.

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lape
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Re: aperture diffraction

Post by lape » Fri Jun 16, 2017 6:02 pm

hmmmm...
already tried path tracing with MLT, and I have tried every obstacle map I can get.. But I never get it like in the manual, see below. There must be another option...
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lape
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Re: aperture diffraction

Post by lape » Fri Jun 16, 2017 6:25 pm

maybe this is a problem with Indigo v4?

Works fine in v3...
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burnin
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Re: aperture diffraction

Post by burnin » Fri Jun 16, 2017 7:27 pm

i thought it was mentioned somewhere that it doesn't work in 4.0.54... oh, i think this is it:
... because in the last one the obstacle map is broken...
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lape
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Re: aperture diffraction

Post by lape » Fri Jun 16, 2017 8:35 pm

Ah, ok. Thank you for this information. So it's a bug...
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Originalplan®
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Re: aperture diffraction

Post by Originalplan® » Sat Jun 17, 2017 7:27 pm

lape wrote:Can anybody tell me how to use aperture diffraction to get some nice lense flares? Does not work for me... Indigo v4.0.54
I think to get lense fares you need to build a lens system in front of the cam.
If you want the real thing. If you looking for an effect only just use different obstacle maps in cam setting.

burnin
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Re: aperture diffraction

Post by burnin » Sun May 17, 2020 9:30 am

This still seems to be unresolved...

Also, I'd love to know, will you add support for color maps in the future - for that fine detail - true to lens bokeh with slight chromatic aberration which every single lens make. And your engine, even tho it might not be in the mainstream, it surely is top notch to properly simulate photography. 8)

ps.
Corona has it ;)

That's not actually the proper way to simulate chromatic aberration though, right? The "Indigo way" unfortunately - or fortunately depending on your POV - has historically been something like; either do it right, or don't do it at all.

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sger
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Re: aperture diffraction

Post by sger » Wed May 20, 2020 3:08 am

aperture diffraction - it is looks like that:
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whisky glass f1.jpg

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