How do you create smooth camera movements?

When I animate the cameras translation and, for an example, I set a keyframe at frame 1 with an X-offset of -1 and a Z-offset of 0 and set a keyframe on frame 60 with an X-offset of 1 and a Z-offset of 0, and at frame 30 i set a keyframe with a Z-offset of -1.

The example given above would create a triangle shape camera movement with a sharp turn at frame 30, how would I go about turning that triangle shape movement into a much smoother half-circle shape?

Let me know if I need to provide a code with an example of what I'm talking about for better reference.

Look at the splines in the spline editor. If all the lines from one keyframe to the other are sharp, then your interpolation is lineair. Select all keyframes and press shift+s to smooth them out and your moves should be smoother already. You can use the handles of the keyframes to make it even smoother, but that's a matter of just trying it out.

Thanks, figured it was something simple I was missing.