Vray Environ Fog in Animations

[mfured20]

Hi guys! Long time no post!

 

Anyway, I have finally been contracted to do my first animation. Its a place in Iowa, with a very distant horizon line. Its going to include some areal shots, and I was hoping to use some fog to shroud that horizon line. I have attached a shot of the type of camera angle I am talking about, although its not finalized at all.

 

On to the problem: I have tried stills with the fog, and it looks great, but when I go to try to use vRaySP4's new Irrmap/LC prepass and rendering modes, my frame times skyrocket from 10 mins to 2 hours. I was wondering if anyone else has successfully used EnviroFog with that animation mode. I can't figure out if its kinda incompatible, or if I am doing something idiotic.

 

Any thoughts on this issue? I'll be sure to update if I finally find a solution/ answer to my troubleshooting.

 

Thanks gang!

[mfured20]

Sorry guys and gals, the image I posted above DOES have fog in it, the one I am attaching here DOES NOT. You can see the difference, and I would love to cover that up for the animation. Ill try a short test tonight at HD res and see what happens.

[Craig Ramsay]

I've not played around with Vray Fog much but I'm guessing there's a quicker way to do this. How about rendering out a Z-depth pass and using it to add fog in post?

 

Craig

[CJI]

At the distance your talking thats certainly the way to do it i think. Will save you so much heartache i think.

[mfured20]

Well guys, I will show you my incredible newbieness [even tho I have been doing this type of thing for 3 years], and tell you that I have no idea how to do a z-depth channel. I suppose I will have to learn.

 

I am going to keep experimenting with vRay Enviro fog for the moment tho, and post up my results here. Might help someone else down the line.

 

Thanks for your time!

[Craig Ramsay]

Here you go, take a look at this -

 

http://www.ronenbekerman.com/adding-fog-using-vrayzdepth-render-pass/

[mfured20]

ha, I actually found this link already, but thank you for your time. You, sir, are a gentleman and a scholar.

 

I am planning on doing a couple of comparisons and posting them up here for other people to use, but I havent quite gotten around to it yet.

[Tommy L]

Z-depth and post prod software is definatley the way forward.