When I first started using cameras I read somewhere that you should let the null animate the camera’s position. I find this way I have more control. I can always animate the camera on its own in conjunction to the null. It isnt required its just a technique I use. The butterflies were all precomped. The two main ones have their own camera movement in their comp to make them flutter in their own space. Its just a 360 spin.
Thanks for the kind words. And yes I freelance for lots of shops – you can email me – richard (at) madfaction (dot) com