Animatable Zoom Blur?

Support Compositing and Post Processing
1

Hello all!

I am looking for something exactly like the “Directional Blur” node but animatable. For example, if I want to create a vortex where it appears to blur-zoom in and then out, it is not quite possible because you can’t thread a “Time” node into the “Zoom” property of the “Directional Blur” node. Boo.

So, is there a way to do it using vector blur? I’m not quite sure how vectors work, so here’s what I tried:
I made a new radial blended texture
I put that texture into the “Z” part of the vector blur node
I set the Z part of the “Speed” section to 1.0
The vector blur node produces a completely black image with no alpha.

What am I doing wrong? Would anyone like a screenshot?
Thanks for your help, all.

2

Is something like this effect what you are after:
http://wiki.blender.org/index.php/Manual/Sequence_Plugins#Box_Blur_Plugin_Effect

3

Sort of, but is there anything like that for the zoom blur node?

4

Best I could find was using the regular blur node with a time input. This arrangement has the effect of someone focusing and unfocusing a camera lens. Here is the setup:

Blurwithtime.jpg786×554 59.3 KB

5

Thanks for your help, DichotomyMatt. That works surprisingly well.

I bet a future version of Blender will make everything animatable, so this problem will probably get fixed before we know it.

6

I hear that is supposed to be the plan. It is a pain to run into a feature you can’t animate.

7

Totally.

Well, thanks again for your timely response. Take care.