Mist?

[RevitGary]

I am trying to do a fog in my scene. I put the mental ray mist lume in the camera volume shader. When I render no mist affect happens just an image with no mist.

 

I added atmosphere in the render elements tab. Now when I render I get what appears to be an overlay of a mist rendered separately.

 

Is this the only way to get a mist you get 2 images then photo shop them together? Cant I make max render the mist in one render output image?

 

I have used glare camera shader and it did it in one image output.

[martincg]

hello Gary, I dont know what kind of mist do you need - i made this one through environment/atmosphere/volume fog - with multiple gizmos. I am rendering through vray but it is 3dsmax built-in effect, so I think it will be working with mental too.

 

it was one shot render - except replacing background and adding depth of field in PS

 

screenshot: i am working in centimeters

 

my recomandation: it is good to render 2 images - with and without fog - you can animate density in fog /0 and 1/ - just for case if client will be want somewhere fog and somewhere not - easy managing it in PS then

Edited August 29, 2009 by martincg

[RevitGary]

ok I tried that. The same type of thing happens. It renders out an image with no fog then renders out another seperate window with the fog image.

 

These will need to be put together in photo shop. Is there no way around this?

[martincg]

hmm looks like it is mental catch, ( or 3dsmax 2010 future, i am still in 2009 )

 

- is it also same if you render image to disk ?

- dont you have any option in render elements for mental /like all layers together / ?

- how your render looks with unactive fog? same?

Edited August 29, 2009 by martincg

[RevitGary]

Still no luck anyone else have ideas how to get a fog in a scene?

Maybe with the mist lume in the camera volume ?

[pixelperfectg]

There's several different ways: parti-volume, mist(lume), atmospheric gizmo/volumetric effects, aerial perspective option on mrSky, mrSky used as volume camera shader, volume light, and render elements/z-depth/post volume effects to name a few.

 

Which one you choose depends on the end result you're after. IMHO in order to help one of the main things that people need to know is, do you need volumetric shadows or not. That will help narrow down the options you have to choose from.

 

Also, perhaps your mist(lume) effect didn't show up due to your exposure settings. If that's the case, see #18 here:http://forums.cgsociety.org/showpost.php?p=2921693&postcount=2

[Jennifer]

Mist doesn't seem to like Photometric lights, but works fine with Standard lights.