Using the Circle option creates a circular shape that can work as a path

for animation. If you make the camera follow that circle and use a Track

To constraint, you will create an animation called "Turntable." In that

animation, a camera flies around an object in a circular trajectory.

Assuming you have a 3D model already at the scene. You can follow

these steps to create a turntable animation:

1. Create the Circle from the Curve group.

2. Adjust the scale and Z coordinate of your curve with the S and G

keys.

3. Select the camera first, and holding the SHIFT key, add the circle

to the selection.

4. Press the CTRL+P keys and choose "Follow Path."

5. Select the camera only and got o the Object → Clear → Origin

menu. That will make the camera origin to align with the circle.

6. Select the camera, and holding the SHIFT key, add the object you

want to stay at the center of your circle to the selection.

7. Go to the Object → Track → Track To Constraint menu.

If you press the SPACEBAR, you will see the camera following the circle

as a path for the animation.

Tip: Use an Empty as the target for your camera. That way you will have

more flexibility to move the focus point for your animation.

By default, your follow path animation always start with 100 frames as

length. It uses 100 frames regardless of your settings for Start and End

frames. You can change that by selecting the Circle and opening the