RGB render different from alpha channel render

Hello, I am new to this forum, I am using Krakatoa 1.6.0.43376 with 3ds max 2010 x64bit

The alpha render is what I want the RGB to look like, but the RGB is choppy and blue( even though I have set particle color to white, and the spotlight lighting the scene to white as well)

How do I make the RGB look more like the alpha?

Can you post a screenshot of the “Main Controls” and “Global Render Values” rollouts from the Krakatoa GUI please? That should help narrow down the problem.

Checking those overrides fixes the color issue, but the choppiness is still there

The settings in here look fine … perhaps the resolution of the shadow map for your spotlight needs to be incresed? If its poorly framing the particles at the default 512 px you might see something like that. Otherwise, I’d like to be able to play with the scene to investigate further. Could you submit the max scene and a sample PRT file? If you don’t want to do this on the forum, you can create a support ticket at http://support.na.primefocusworld.com/tickets/

I am with Darcy, this is probably shadows artifacts. Play with the shadow map size and/or reduce the Lighting Pass Density - notice how your Shadows density (5.0/-1 = 0.5) is orders of magnitude higher than the Final Pass Density (2.5/-4 = 0.00025) ?

That was it, thank you