Let's think of this example (among many others).
To simplify my drop sheet and render times I have one simple (A) object for far distances, and one more complex (B) when I dolly in the camera.
Let's say on frame 150 I need to switch from object A to object B.
What could be some methods to appear and disappear objects on an animation?
Some examples I have used:
- Keeping object B on a different location out of sight, anchor it at frame 150 and move it into position at frame 151. And vice-versa with object A.
One con is that If I turn on motion blur, those two frames render the motion blur.
- Keyframing transparency.
The con is that the material gets more complex, and when overlapping with the other object in has render issues.
- Simply rendering Roll A until frame 150, turn on and off objects, and render from frame 151 and compose later.
What other methods can I use?