Canova Museum - SP3 Fog

[peterguthrie]

An old scene (Canova Museum by Carlo Scarpa) that I decided to revisit to try out the new SP3 fog. I love how easy it is to set up the fog, and it seems to be really fast too!











The settings for the fog were as default except I changed the density to 20000 (I work in mm) and enabled scatter GI and changed the bounces to 100.

These renders are straight out of max, I used vray for the depth of field (lack of), vignetting, distortion, colour balance & fog.

[chrisjacks21]

Very nice Peter

[m_hinks]

Very cool. Can't wait to play!

[giraffe]

Hi Peter,
Did you connect the fog to the light? Which kind of light is it? Is it vraysun?

I am trying to use fog effect but I dont have visible sun rays as you have in my scene.

[peterguthrie]

Hi giraffe! I only have a vraysun, so i didn't link it - just left it on 'use all lights'

screen grabs of settings attached. I had a box gizmo over the whole model, which probably wasn't necessary. What I have noticed is that the sun rays aren't that visible unless you are in quite a dark room, which is probably how it behaves in real life, but it would be nice if there was a trick to exaggerate the effect. One way i suppose would be to save the vrayatmosphere element and comp it over a non foggy render in post.

[giraffe]

Thanks for fast reply
I have only vraysun too and similar settings. But I cannot see sun rays like volume light. I will try more.
For comp on a non-foggy render : I am not sure but maybe this can be made by rendering the fog with everything in black matte material. And then we can use this render as screen layer in Photoshop.
Nice weekend

[mcnamex]

luvly peter

[bardo]

@peterguthrie

for the statues...what did you use? Did you model them or buy from commercial library or from free download??

Thank in advance

[werticus]

Peterguthrie can you spiff up things, and release this as a test scene for everyone? I think we need a new test scene...

specifically because of this thread: http://www.chaosgroup.com/forums/vbu...465#post397465

[tricky]

Do I understand it correctly that you can't render out the fog seperatly as some sort of vrayatmosphere element unless you have the vrayfog switched on? Its a pity it works like that as having to do an extra material overide pass is a pain. I suppose if it affacts GI it is inevitable though.

[peterguthrie]

Bardo, there is a thread where vlado was looking for a specific scultpture, I think I linked to the evermotion collection and the 3d scanning forum where I got all of these models. I'm on my phone writing this otherwise I'd dig out the links for you.

Werticus, yes I'd be happy to share the scene, I'll upload it on Monday when I get back to my 'puter. As well as taking ages, it's a real bugger to render with anything other than the universal method, I'd love to see if anyone can nail it

[trixian]

Do I understand it correctly that you can't render out the fog seperatly as some sort of vrayatmosphere element unless you have the vrayfog switched on? Its a pity it works like that as having to do an extra material overide pass is a pain. I suppose if it affacts GI it is inevitable though.

You are correct. Something that bothers me a bit, so I submitted a request for this.
Edit: Hehe.....it bothers me that it works like that, not that you are correct

[3Seventh]

You guys are right, second that!! However i'm overriding by now all materials by a black one even with all GI and it works for me as a atmosphere layer... -after, of course, everything else previously rendered- ....maybe this helps a bit by the time...

[peterguthrie]

hey 3Seventh, looking forward to seeing what you come up with if you are playing around with sp3 fog!

what advantage does rendering a version with override materials have over just saving the vrayatmosphere element in render elements? faster?

[3Seventh]

Hey Peter! Sorry, i'm late. Busy time

I have no time now for playing a lot with but i'll find freetime for indepth experiments . I find VrayEnviromentFog amazing well-implemented feature!

Here, an example. Fog pass is overrired black mat. It let me much more control in GI bounces, speed and color correction terms for compositing purposes. I realize that it's a bit tricky but it works for me by now...

PS: Note that sunrays come only from HDR importance sampling

Regards,
Alex.