Hi all,
I have a small problem, which needs a quick fix. I currently have a scene with about 8000 particles, I think, attached to the surface of an object. The problem occurs when I render. In the attached picture you can see what happens after a full render, and then when I only render out a specific region. What’s going on? 
(I’d like the endresult to look like the way it does when I render a smaller region)
Here I rendered only a tail and the left wing, as you can see the glow effect is more intense when I render the regions by themselves
