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Fire (Atmospheric Apparatus) And mr Sky?
show user profile  Brother Yas
Hello. As some of you are aware, when ever one applies the mr Sky effect to a scene, it automatically changes the Exposure Control to the "mr Photographic" setting, thus allowing the mr Sky to work properly. The downside to these controls being changed, is that you must now buff up the intensity of lights greatly in order for them to work inside of the scene. But, that problem can be solved, the other problem is the ability of Fire to render properly. When ever it tries rendering, the fire appears black, with no color, if it even appears at all. I prefer using the atmospheric apparatus to render fire, because it's the easiest and quickest way to be done, especially since my computer's processing is not as great as I would like it to be. :\
I've attempted to use Particle Systems to render the fire, but this takes an incredibly long time, even with me render farming two computers.
I am hoping that someone could show me a way to help fix this problem with the atmospheric apparatus, or show me another,quicker, easier way for this to render that doesn't take a full day to render 400 frames. Even pointing me in the right direction would be greatly appreciated.


Ok, so if I convert Exposure Control to Logarithmic, I can get the fire (atmospheric apparatus) to render (sort of). The problem is that the fire is darkened. :\
Any ideas?


The other shadows are intentional.
read 866 times
6/23/2010 3:19:34 PM (last edit: 6/23/2010 11:48:04 PM)
show user profile  cbflex
You can't. I recommend getting the plugin FumeFx. It's much better than a particle system and it'll to a much sexier job than the atmospheric aparatus.
read 813 times
6/27/2010 8:55:17 PM (last edit: 6/27/2010 8:55:17 PM)
show user profile  Dub.
In the mr exposure dialog, set the physical scale to unitless (down the bottom) and set the value to 80,000

That will work.

read 794 times
6/28/2010 6:24:01 AM (last edit: 6/28/2010 6:24:01 AM)
show user profile  Brother Yas
Both worked!
read 775 times
6/30/2010 7:01:22 AM (last edit: 6/30/2010 7:01:22 AM)
show user profile  cbflex
True, that does work. But from the test I just made, I can say that the fire really doesn't do the best job at being photorealistic. Fire usualy isn't as round as that. It also doesn't luminate the scene as fire would in real life. If you're on a really tight schedule, then the atmospheric apparatus does give you quick results.

The other thing I tested was the volume fog effect. It does produce a cloud like fog, but from what I've seen in the past, this fog is mainly best used for simply and only fog, not clouds. Clouds are a very unique type of surface that scatters light throughout and inside it and gives a unique effect which this volume fog wouldn't be able to do. This volume fog is best used on the ground or perhaps as some weird green or red gas in space. In other words, both effects don't simulate physical lighting the way they would in real life, but they can definately be used in their own special ways.

I wonder if Autodesk is ever going to make a Max version that is able to make fire, water, and voumeteric smoke and clouds.
read 746 times
7/1/2010 10:37:53 PM (last edit: 7/1/2010 10:37:53 PM)
show user profile  cbflex
btw, if you want to spice up your scene, I'd highly recommend using a bump map on that surface and setting the size to be very small to simulate all the sand and dirt.
read 744 times
7/1/2010 10:38:48 PM (last edit: 7/1/2010 10:38:48 PM)
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