# Storyboard Continuity: Eyelines, Screen Direction and the 180-Degree Line

Canonical URL: https://www.cineoboard.com/blog/storyboard-continuity-eyelines

The continuity errors that make a board un-cuttable — eyelines, screen direction, crossing the line — and how to catch them before the shoot.

Published: 2026-09-06 · 7 min read · Guides

Pretty frames that cannot cut together are not a storyboard. They are a moodboard with shot numbers. Continuity is the difference.

## Eyelines

If character A looks camera-left at B, character B looking at A must look camera-right, at a matching height. Draw the eyes, or draw an arrow. “Both facing us in MCU” is how you invent a conversation that cannot intercut.

## The 180-degree line

Pick a line between the two subjects and keep the camera on one side of it. Crossing it in coverage reverses screen direction: a character walking left suddenly walks right, and geography collapses.

You may cross the line on purpose (a reveal, a new master). You may not cross it by accident because a generator suggested a pretty angle.

## Screen direction in motion

A car exits right in shot 4; it enters left in shot 5 if we are following it. Matching direction is how the audience understands travel. Mark it on the frame (`→ DIR`).

## Wardrobe, hands and the product

The practical continuity problems on commercials are not theory:

- Watch on the wrong wrist
- Pack copy that changes between hero and insert
- A glass that refills itself
- Daylight in one setup, practical night in the reverse

Lock characters, locations and props as reusable elements. [CineoBoard](/)’s library exists for this, not for decoration. Update the pack once; every frame that uses it follows.

## A review pass that catches this

Before you send to client, play the [animatic](/blog/how-to-make-an-animatic) and also flip through stills in order asking only: can these two frames cut? If you have to explain geography, redraw.

## FAQ

### Do I draw eyeline arrows on client boards?

On internal boards, yes. On client boards, only when the drawing is ambiguous. The shot notes should still say “looks camera-left to Ben.”

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