Motion blur

Motion blur smears a fast-moving layer along its path, so quick action reads as smooth instead of a strobing jump. Celas works it out from the real motion between your keyframes — no guesswork.

Turning it on

There's a global motion-blur switch on the Timeline toolbar, plus a per-layer toggle in its own column on the timeline — so you can blur only the layers that need it and leave the rest crisp. The project-wide settings live in Project Settings.

Shutter angle, phase & samples

• Shutter angle — how long the shutter stays open. A wider angle means a longer, smearier trail; 180° is the film-standard middle ground.
• Shutter phase — slides the blur window earlier or later around the frame.
• Samples — how many sub-steps get blended. More samples means smoother blur, a touch slower to render.

How it reads

The trail falls behind the direction of travel, and the first and last frames of a move stay sharp — there's no motion there, so there's nothing to blur. It behaves like a real camera.