I'm rendering an animation that involves photons. Unfortunately, even if 
I increase the photon count to the point where it takes 5 minutes to 
compute the photon maps, the image is still too grainey.

Now, for a final still, I could just crank up the photo count until it 
looks good then leave it for a few hours to finish the job. But for 
several thousand frames of animation, that's not a real hot idea. 
(Besides, you won't have time to look at it *that* hard.)

The trouble is, I can see individual "dots" of light. So I was wondering 
- is there a way to make the photons more "blurry"? (To remove the 
grainey appearence and make the caustics smoother.)

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