Zoom lens distortion - how?

Hey all!

I was wondering if anyone has any ideas on how to recreate this effect in flame?

I have tried a few things and get close, however, the Lens distort node combined with scaling and motion blur in action just doesn’t give the desired effect.

Any pointers would be greatly appreciated.



Hey Andrew,

Couple things I’d try: first, easiest, is bicubics. Animating the corners while keeping the center point locked, and cranking the motion blur. (Fun fact, this is how we did the transitions between camera angles for the prevision sequences in Minority Report).

Second, less easy, projecting into a sphere, half sphere, or some other piece of geometry that you can either animate the scale of, or deform.

Good luck!

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Also, if money isn’t an issue, sapphire zoom, I think, does pretty much exactly this.

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Hey Kirk!

Thanks for the speedy reply.

I shall give those techniques a try.



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Third option: combine the lens distortion node (for corner/center warping) with the radial blur.

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