Volumatic inferno question

dogcat

Hi,

I have the following product: https://www.daz3d.com/pyromantix--volumetric-infernos, and I have a question about it.

In the promo, the fire looks very bright. The smoke doesn't take over, as seen in the image attached.

When I tried to use this in DS, I got the result in the second attached image (that I am not happy with); this is on a 100% scale.

When I try to scale it up, the smoke is taking over the whole inferno (image attached).

Also, the shader of this is Iray Uber and not VDB as in other products

Can someone please explain why it happens and how I can achieve the result in the promo?

If you can suggest a better fire product, that would be great.

Thanks,

alan bard newcomer

just loaded one of them into a scene with a night time skys of iradience and got this
only 43 iterations but it looks like it will be bright 
titan X 12 g

dogcat

alan bard newcomer said:

just loaded one of them into a scene with a night time skys of iradience and got this
only 43 iterations but it looks like it will be bright 
titan X 12 

Did you upscale it?

alan bard newcomer

first image ... regular inferno
second image inferno scaled 400%
third image inferno scaled 400% and magiced? 
Not magiced ...  a few years ago I made some large planes for fill lights and set the cut out opacity way down >.001 or maybe .0001 and they worked. 
But recently I put one in a scene and very little light. 
I think the iray render has made a change (or maybe I never noticed it back then) but there seems to be an interaction between size and cutout and light. 
the fire surface in the inferno has a cutout of .018 or such 
So the only magic was changing the Luminance from 2000 to 200000 and that put the fire back in the third render. 
it could very well be that size is the active variant and if you increase the size of an emmisive surface you have to increase it's brightness
third image was not a full render maybe a couple of hundred iterations not a thousand