Operation Manual

505
Effects and animation presets
Last updated 12/12/2014
This effect works with 8-bpc and 16-bpc color.
Optics Compensation effect
Use the Optics Compensation effect to add or remove camera lens distortion. Elements composited with mismatched
lens distortion cause anomalies in the animation. For example, tracked objects in a distorted scene don’t match the
scene area because linear objects don’t follow the distortion of the scene.
This effect works with 8-bpc, 16-bpc, and 32-bpc color.
Field Of View (FOV) The field of view (FOV) of the distorted footage. The FOV is relative to the size of the source layer
and the selected FOV Orientation. The distortion amount is relative to FOV. No general rule defines what FOV value
applies to different lenses. Zooming in reduces the FOV, and zooming out increases it. Consequently, if footage includes
different zoom values, you’ll need to animate the FOV value.
Reverse Lens Distortion Reverses the lens distortion. For example, to remove wide-angle lens distortion, set Field Of
View to 40.0 and select Reverse Lens Distortion. Selecting Reverse Lens Distortion enables the Resize control.
FOV Orientation The axis on which the Field Of View value is based. This setting is useful when matching computer-
generated elements to the rendered view angle.
View Center Specifies an alternate center point of view. This setting is useful when using custom lenses that aren’t
centered. However, in most cases, this control should be left untouched.
Optimal Pixels Maintains as much pixel information as possible through the distortion. When selected, FOV values are
no longer reversible.
Resize Resizes the layer when the applied distortion stretches the layer beyond its boundaries. To use this control, first
select Reverse Lens Distortion, and then choose an option. Off doesn’t resize the layer. Max 2X resizes the layer to a
maximum of twice the original width and height. Max 4X resizes the layer to a maximum of four times the original
width and height. Unlimited resizes the layer as far as it is stretched. This option may require a large amount of memory.
Add and match lens distortion with Optics Compensation
To match FOV values, layers must be the same size. However, if you select Resize, you can apply Optics Compensation
again and reverse the distortion using the same value (reversed). You can then apply another effect between the two
instances of Optics Compensation.
If you resize a layer using Optics Compensation and then precompose it into a larger composition, you cannot reverse
the distortion using the same value until you enlarge the precomposed layer to accommodate the expanded layer.
1 Select the layer with the distortion, and choose Effect > Distort > Optics Compensation.
2 In the Effect Controls panel, adjust the FOV until a distorted edge or line appears straight. Note the FOV value.
3 Select the computer graphic layer you want to distort, and apply Optics Compensation to it using the FOV value
from step 2.
4 Select Reverse Lens Distortion.
5 Remove Optics Compensation from the footage layer.