Creative Effects > 3D Keyer > Mastering the RGB Viewer >
Changing the Display of Key Elements

You can change the display of the tolerance ellipsoid, softness ellipsoid, and patches as you work on the key to suit the operation you are performing. For example, to adjust the tolerance range after setting the softness, you could set the softness display to wireframe, or remove its display altogether, for a better view of the tolerance. See Setting the Tolerance and Setting the Softness.

Setting the Tolerance and Softness Ellipsoids

As you sample the tolerance and softness in a key, corresponding key elements appear in the RGB viewer. Set the appearance of the tolerance and softness ellipsoids to make it easier to work with them while refining the precision of the key.

Use the Key menu to set the display of the tolerance and softness in the RGB viewer.

(a) Tolerance Convex Hull box(b) Tolerance Display box(c) Softness Convex Hull box(d) Softness Display box

Tolerance and Softness Display boxes
  Select an option to set the appearance of the tolerance and softness ellipsoids.

Select: | To display:
--- | ---
Ellipsoid | An opaque ellipsoid of the exact colours sampled.
Cloud | A semi-transparent grey ellipsoid. You can set the transparency of the ellipsoid using the Cloud Opacity field in the Preferences menu. See Setting the Cloud Opacity.
Wireframe | The ellipsoid as a wireframe outline
None | No ellipsoid. Note that when an ellipsoid is not displayed, it still has an effect on the image

Tolerance and Softness Convex Hull boxes
  Select an option to set the appearance of the tolerance and softness convex hulls.

Select: | To display:
--- | ---
Vertices | Only the vertices of the convex hull.
Surface | Only the surface of the convex hull.
Vert&Surf | Both the surface and vertices of the convex hull.
None | No convex hull.

NoteVertices do not appear on keyed elements when Tolerance Display or Softness Display is set to Ellipsoid (because an ellipsoid is opaque).

Changing the Patches Display

You set the display of each of the three patches individually. In the Patches menu, use the Display boxes to set the display of patches 1, 2 and 3.

Display box
  Select an option to set the appearance of the current patch.

Select: | To display:
--- | ---
Box | The patch as a wireframe box.
Surface | The convex hull of the patch.
Box&Surf | Both the wireframe box and convex hull of the patch.
Cloud | The patch as a semi-transparent grey box. You can set the transparency of the box using the Cloud Opacity field in the Preferences menu. See Setting the Cloud Opacity.
None | No patch. When a patch is not displayed, it still has an effect on the image.

Setting the Cloud Opacity

You can control the opacity of the Cloud setting of ellipsoids and patches as they appear in the RGB viewer using the Cloud Opacity fields in the Preferences menu.

(a) Overall Opacity field(b) Key Element box(c) Individual Opacity field

You can adjust the opacity for all key elements or for individual key elements:

- To set the cloud opacity for all ellipses and patches, use the Overall Opacity field.
- To set the cloud opacity for an individual key element, select the element from the Key Element box, then set the opacity in the Individual Opacity field.