[mjcherry]

Who uses aperture maps and how do you use them?

When I shot a lot of film, I would sometimes use a filter to give a bit of bloom and star streaks to a light. Can we use an aperture map to do that?

Anyway, would love to see some examples of how you guys are using them!

[Mihai]

You could do that but you'd have to make a very narrow star shaped map, with the amount of streaks you'd like to see around the highlights. But the diffraction simulens thing though is very old and I don't think any work has been done to it since it was added many years ago. If you push it too hard it blurs the entire scene.

[Half Life]

Here's an example of the a more stylized glare/streak effect, using a custom narrow 4-point star shape aperture map.

[mjcherry]

Thank you!

[Eric Nixon 20170610100005]

I made this map today, hope it helps, you will need an instense lightsource ofcourse.

aperture_medium slit big.png

diffraction was 258 Frequency 1593 bokeh ratio 2, angle 0, Glare is a post effect so camera settings dont really matter other than artistic preference, it is fiddly esp the frequency setting but it does work.

medium slit big D258 F1593 bokeh2-0.png

Just the car is 3d, lit by the high-res hdri background, the carlights are 2cm low-poly spheres, the bowl is simple bsdf nd500 roughness 4, glass-rough 0 has a normal map applied to the inside surface by way of cubic mapping non-tiling with a offset... Maxwell workflow lol.

p.s. car grille needs better geo.

[mjcherry]

OMG, I'm just seeing this now. This is fantastic! I need really figure out how to use it, but seriously, thank you! I'd love to see more examples of how you use them.

[Eric Nixon 20170610100005]

Glad you saw it.

[Mihai]

Old addition to Maxwell but still looks nice in many cases I only wish we had more control for the Glare and the Scattering of where to apply it - a balance slider to make it affect more or less *only* the bright parts of a render, even if you really push it.