When a character stops running, the clothes and the hair keep going for a moment. That is follow through. When a character walks, the legs, the arms and the head do not move as one block; each part has its own rhythm. That is overlapping action. Both principles say the same thing from two sides: in the real world, nothing arrives at the same time and nothing stops dead.
In Fala, Vô! you see follow through mostly in the fabric. When the grandfather stands up from the wooden bench, the camera is so close that his leg is almost the whole frame, and the trousers keep moving after he is already up. It lasts a few frames. Without it, the shot feels like a puppet.
Translated to motion design
- Stagger. When several cards enter, each one starts a couple of frames after the previous one. The group reads as a wave instead of a block, and the eye has an order to follow.
- Settle. When a card arrives, it goes a little past the mark and comes back, or it compresses slightly and relaxes. The movement is over, but the object is not frozen.
- Secondary action. Something small supports the main action: the shadow tightens as the card lands, a caption enters a beat after the title.
The idle animation
Games have a name for what a character does while nobody is controlling it: the idle animation. The character breathes, looks around, shifts its weight. In film the same layer is called base animation, and everything else is built on top of it. Motion design needs it too. A scene where every card is perfectly still between actions looks like a slide deck. A slow, almost invisible drift keeps it alive.
A last note about fades. A fade is the opposite of follow through: instead of arriving with weight, the object appears from nowhere and asks to be forgiven. If a movement feels abrupt, the fix is almost never a fade. It is a better curve, a little stagger or a settle.
Parts of this series come from Felipe Risallah's undergraduate thesis on the production of the 3D short film Fala, Vô! (Cinema and Audiovisual, UFES, 2023), and from The Illusion of Life: Disney Animation, by Frank Thomas and Ollie Johnston (1981).