Yeah, hate that. Make sure the black on your trans map is pure black. Other than that, I don't know, I have had that problem sometimes to the point, I couldn't get rid of it no matter what tweaking I did. AS

Okay, sounds like lots of work with negative lights... :>)

Oh, you can start increasing your transparency, that WILL get rid of it, but obviously it will begin to make your veggie leaf slightly transparent also. ;o/ AS

I keep forgetting to check the "blend transparency" setting when using trans maps.

In this case, I would say that the black is at 1 or 2, instead of absolute Zero, in your Alpha image... Check it out, and try it again. Another thing I noticed, alpha-channels don't work on Metaballs OR with volumetrics. (shrugs)

Strangely weird, I deleted that sphere, recreated it with the same image and mask and it worked fine... the really weird thing is that Blend Transparency was NOT checked. I think Bryce changes the rules on us once in a while just to keep us humble...

Volumetrics and trans maps. They do work, but I have found that for me to make it work, I have had to use a totally different looking map for the trans. Meaning, I took some pics of flames from a campfire, I took one specific pic of flames against a dark/black background, and loaded that up. Then I used a different flame pic for the trans. If I used the same pic for both it wouldn't work (very well) AS

Good stuff, AS, thanks for the tips! What I meant was simply that shining a volume-visible light through a 2D pict-based object produced distinct square edges, and that I don't believe that Bryce's volumetrics properly read alpha-channel information. But I love your fires, very, verynice! The one on the far right and the second one from the left are my favorites!

Lol, ah, okay. ;o) Thanks, my faves have been (from the left), the 1st and 3rd one. AS