The Focus tab’s settings control, among other things, numerous parameters that affect the Motion Camera’s focal length and focus, which makes it possible to create effects that would otherwise not be possible using normal camera settings.
Enable this option if you want the Motion Camera tag to also take control of the respective camera’s focus parameters. The camera parameters will be overwritten.
This setting must be animated (here and not for the camera itself) if you want to use Focus-Dynamics.
If this option is enabled, the camera’s focal length will be adjusted automatically. This will be done in accordance to the defined target object (Animation tab) and the Blend settings (Target Position A1, etc.).
If Enable Auto Focus is disabled, the camera’s focal distance can be adjusted here manually. If Enable Auto Focus is activated, this field will be grayed out.
I Enable Auto Focus is activated, the Offset value can be used to generate a blurred effect.
Probably everybody is familiar with Alfred Hitchcock’s vertigo effect. The camera approaches an object (or pulls back from it) and simultaneously zooms out (or in). The size of objects at the center of view remains unchanged and the perspective at the edges changes. To achieve this effect, the camera must always be in motion.
This effect can be created by setting Intensity larger than 0 (the best results can be achieved if Enable Auto Focus is disabled.
A value of 0% will produce no dolly zoom and a value of 100% (which is recommended) will produce the full Dolly Zoom effect. Intermediate values will produce a ,sloppy’ effect.
As soon as the value is set to greater than 0% the Focal Distance value will be grayed out automatically.
2 modes are available:
Based on the Focal Length value, half of the Focus Area to the rear and front will be used in which the grayscale gradient and depth of field (focused within the Focal Length and increasingly blurred in both directions) will be adjusted accordingly.
Use this setting to define regions within which the blur falloff takes place - from 100% in the center focus area to 0% at the edge (see also DOF Map Front Blur in the camera settings).