Let us consider one very important thing when trying to legitimize the use of camera trickery & creative editing (something that's been an issue since Copperfield first started doing it). . .
One noted TV personality is so addicted to using such that when he was set into a live theatrical program HE SUCKED! He didn't know how to pull of real magic and as an end result his Vegas show, from an industry point of view, was bombing left and right. It was still bringing in the teens & young adults of the MTv genre that he played to, but even they walked away feeling a bit ripped off.
Using Green Screen, CGI, Editing methods, etc. IS NOT magic. If it were then anyone could shoot footage in which the miraculous happens and call themselves a "Magician". Same, in my book at least, goes for stunts in which store fronts or nite club flooring is gimmicked just for a video stunt like walking through a wall or window, the DeKolta Chair and even a couple of suspension bits I've seen. Sure, it's clever and historically there have been many "built in" effects systems -- built into theaters or facilities in which a regular, long term engagement was involved. Installing a $10,000.00 illusion into a storefront for a single use situation is STUPID and a very poor move when it comes to business and gains on the investment. He can't travel with that piece nor can it be done on stage in a real show.
When Copperfield did the Grand Canyon special there were portions of the levitation that were shot at Lucas/ILM so as to show him moving through the air. That's taking things way too far. Using camera perspective in order to pull off the stunt is perfectly fine and an established technique in magic, be it close-up or stage, but Green Screen . . . c'mon.
We should NEVER demonstrate on camera anything we cannot replicate live. . . I'm not talking about things like perspective manipulation but more about the creative editing argument. Copperfield's Statute of Liberty show has a levitation feature that insiders called the Amazing Changing Audience Trick in that the routine had so many edits and inserts so as to make three different gimmicks appear as one single levitation. If you actually watch the audience vs. the effect, you will seen new faces popping up and out with great frequency. How is such a thing "Magic" or more importantly "Legit"?
We are obliged to use extreme discretion when it comes to this medium and what we do, how we do it and why; it's a huge cob web that can hurt us as well as the art itself.