RE: simple setting keyframes process after scaling
FYI – this process doesn’t work if you want to zoom out from something and it’s not EXACTLY in the center of the frame. Only the 3D camera will work if you’re starting in tight off center, and then zooming out to a full wide shot.
I’m sure it works if you’re working with a really really simple animation, but if you’re looking to emulate camera moves, the only thing that works is using a camera.
Just my 2 cents.