Monday 21 September 2020

Always Add a Blink on a Head Turn

When do we blink?
A common mistake made by junior animators is to forget to add blinks on their characters, especially on a head turn.  Everybody blinks a lot, but since we do it without noticing, we barely notice it.

In the video below, I explain why it is that characters need to blink much more often than you might think.  Our eyelids act much like the shutter of a camera, cutting on motion and editing out everything but the important information that we actually need to see. 

And, importantly, when you animate a blink, don't forget to add a little motion to the eyebrows as well. 



Why we blink
Blink action: The Animator's Survival Kit
Blinks are important because we blink so often, so routinely, and because if we leave them out, our characters tend to feel robotic or zombie-eyed.

Try moving your head from one side of the room to another. Did you blink? Of course you did. But you probably barely noticed doing it. Blinking is like breathing - it's something we do automatically, without conscious effort.

Add blink on a head turn - Animator's Survival Kit
Add blinks on a Head Turn
When we move our heads to take in a different view, our brains have to process a lot of new data. To  minimise the amount of data we have to process, we blink, effectively editing out all of the transitional or in-between material. This is why cutting in film works - the cut mirrors the effect of a blink when we change eye direction.

Timing a Blink - Tutorial Video
A standard blink is usually about 8 frames, with the lids closed for about 2 frames, and an ease-in and ease-out at either end. Often you want to offset the eye lids by one frame. To see how to do it in detail, watch the short tutorial video below.




Always Add a Blink on a Head Turn
The general rule is that your characters should blink every time they change eye direction. So, if your character is looking from one character to another, or one point in space to another - always add a blink.

Like all rules, this one can be broken. But, for the most part, adding blinks makes your characters feel more alive, and helps make the motion feel more believable. It will also help to avoid the "zombie eyes" problem described above.

Animate the eye brows too
Eyebrows matter too - keep them alive
Don't forget also that when we blink our eyebrows are involved as well - even if just a little bit. So, when your character blinks, you should add a little motion on the eyebrows too; to create flexibility in the face and make the motion feel less stiff.

Learn the Rules, Then Break Them
The trick with mastering the craft of animation is to learn the rules, apply them and then - when you fully understand them - know when to break them.  Remember, if in doubt, always add a blink.

Animating Eyes and Expressions
For more on animating eyes and expressions, see these blog posts:
Animation by Jinng Hwee Tan

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