Volumetric Lights trick

Corona Corona for 3ds Max Tutorials & Guides
23

Hi Polymax,

Can you elaborate how you did it ?

24

Does it even make any difference whether you set the plane perpendicular to camera or lights or just in some random direction?

25

plane must look at cam. And I use opacity for the planes.

26

Sorry for the noob question but can you expain the workflow, I didn’t get it.
White plane animated, in which direction, planes dimensions, angle?
thank you

27

stol_6_zpsdd656586.jpg
stol_6_zpsdd656586.jpg943×530 31 KB

522 passes … neat trick but not really that useful.
and get this work for animation is impossible

28

How long did it take? I bet you don’t need so many passes so you could try increasing GI samples. But yeah, it’s not very usable anyway. :smiley:

29

cca 20 minutes, yeah i think I had about 4 GI/aa. so that could be better

30

Hello,
I’ve tried and tried and tried but I really cant figure out how this is done. Would someone please be so kind and give me a short step-by-step tutorial?

best regards,
melvin

31

Hey melvin, try with my settings as attached.

Really interesting techique , but slow render times and very noisy. Does anyone have any advice on that ?

MB.jpg
MB.jpg1057×473 66.4 KB

32

Here is my contribution; rendering time 4h (image is 3000pix large)

classroom-web.jpg
classroom-web.jpg866×577 116 KB

33

No wonder the teacher is pissed of as the students are a) staring through the window, b) browsing facebook, c) running across the classroom with their arms close to the body with the speed of light.

btw, is this done with the moving plane trick? I wonder how this competes against the volumetric fog.

34

In fact the teacher did not look comfortable !
Well I only use a box with a CoronaVolumeMat and it’s so easy to render.
I will test the technic with the plane ASAP… thanks Maru :wink:

35

maru: interesting interpretation, I just see beginning of some porn :smiley:

36

@ Ondra, best comment!