I would agree that working in true HD on FCP means lots of rendering. However, looking forward there are two trends that are going to ease that pain. First, the ever increasing processor speeds (Dual core) will help slim down render times. Second, distributed rendering will really help with some of the heavy lifting. I know that FCP does not support distributed rendering now, but there are some ways to dance around that.
For example, SHake DOES support distributed rendering. You can export your green screens to Shake, feed the render farm, and bring back into FCP. As Michael points out, “there’s nothing like realtime processing, but you pay for it.” So, if you want to pay for it, you can buy several FCP systems, link them with x-SAN, and still be cheaper than your Avid DS. Now, for the price of one Avid, you’ve just built a whole post department.
Mark Raudonis