How to change camera from perspective to orthographic? I can't find any property that does this.

I'd also like to change from one to the other with an animation setting halfway through my video, but not sure how I'd do that either.



Update: the animation question is answered here: Is it possible, without knowing Python, to animate between orthographic and perspective camera view?
Go to the Properties panel > Data > Lens, press the Orthographic button, and choose the Focal Length to zoom in/zoom out.