Optics
Motion blur
The smear of movement: a directional streak along one axis.
Controls
- motion
- Three different camera moves, not one with a dial: a slide is even across the frame, a zoom bursts out of a point, a spin winds around it
- distance
- Length of the trail. On zoom and spin this is the length at the edge — the middle always moves less
- angle
- A number from 0 to 180, 0 by default.
- centre x
- A number from 0 to 1, 0.5 by default.
- centre y
- A number from 0 to 1, 0.5 by default.
- fade
- A real exposure has an even trail: the shutter is open the same amount at every position. Fading is afterglow, not exposure
- trail
- A one-sided trail runs behind the movement, the way a camera sees it. Both sides read as defocus along an axis instead