Capturing screen areas with QuickTime X in Snow Leopard
QuickTime X in Mac OS X 10.6 Snow Leopard comes with a handy feature for taking screencasts. Now there's one problem with that: You can only capture your whole screen, but not only an area of it. That may be a problem if you want to show only a small application window to your viewers, especially if you're running a huge screen resolution as for my iMac 24" with 1920x1200.
Well. I hope that Apple is going to add an option for that in the future, but until then there's a quite usable way to do it anyway: You can make use of the screen zooming feature. For me that one is triggered by using the control key and my mouse ball/wheel. QuickTime X will capture the screen exactly like you see it, so zooming is pretty neat for working around that issue.