would it be like heat vision or somethin else

My guess is that it would look something like the sun's corona(layer in the sun). Here's a link: http://science.nasa.gov/newhome/headlin ... ep99_1.htm

Yeah, What he said.

I imagined more colours than that. Like looking at a prism

Prism? No. Okay, probably multicolored. It depends on what gives a more dramatic effect on screen.

But they can't blind us, and they'll want to keep our attention on what Nat's doing. Not on him.

Pastel colors?

CG Crayola! *yay*

Reduce it to a heat blur?

People would probably misinterprete it as the polution/smog in London.

Meh, Meh and meh.

Miraxmax, work your magic!

The magic of Disney is better

They could get the guys who did Lotr and Narnia in New Zealand.

Miramax made 2 Fast 2 Furious (The lameness was the script writer's fault.)

Don't forget the Vin Diesal-less cast.

Vin Diesal? There is no dearth of good actors, you know...

They could have picked better ones. And there's no actors from the original movie in the third one.