Wonder if anyone has an easy solution for this. What I'd like to do is to take an animation, rendered as numbered files (eg Anim001.tif, Anim002.tif, etc) as layers in Photoshop, with each layer coming in with a low opacity.  The idea is to build up a kind of synthetic motion blur.

Talking about a lot of frames here (approx 100) so I don't want to have to go and manually load each frame, or set its opacity by hand. . .

Is there a one click solution?