Interpolations
Interpolation is the calculation of values between two keyframes. To set an example, when you move a Camera from point A to point B (linear or non-linear animation) and select an interpolation type, the distance between two points will be calculated automatically; therefore, you don’t need to add a keyframe to every single frame.

Selecting a Property Keyframe activates the Animation Interpolation dropdown menu, and then you can define an interpolation type, as shown above.
Action keyframes can have the following interpolation types:
- Jump
- Linear
- EaseIn
- EaseOut