Adobe AFTER EFFECTS 7.0 - Controls for the 3 D Glasses Effect

ADOBE AFTER EFFECTS 7.0
User Guide
487
To avoid problems with flipped views, keep the following guidelines in mind:
• Use the same vertical dimensions for the composition and source images. A one-pixel difference produces the
same result as moving the position one pixel vertically.
• Make sure that the layer’s Position values are whole numbers (such as 240 instead of 239.7).
• If your left and right view images are interlaced, de-interlace them before using 3D Glasses, to avoid field
mismatch.
• Because 3D Glasses creates interlaced frames, do not select an interlace option in the Render Settings dialog box.
Ghost effects occur when the luminance values of one color exceed those of another color to such an extent that you
can see the first color through the wrong lens of anaglyph glasses. For example, an excessive red luminance value
becomes visible through the blue lens. If you adjust the Balance value, test the results on the final output media. If
you set the Balance value too high, a reversed shadow may appear.
Controls for the 3D Glasses effect
Left View, Right View Specifythelayertouseastheleftorrightview.Youneedtoapply3DGlassestoonlyonelayer
in a composition. If you use a second layer, make sure that the two layers are the same size. The second layer does
not need to be visible in the composition.
Convergence Offset Specifies the amount that the two views are offset. Use this control to realign uncalibrated
camera views of rendered material. Photos or images rendered from 3D programs are generally misaligned and
require a negative Convergence Offset value. If the original footage was shot with correct convergence, there is no
need to change this value. Keyframing this value may result in erratic animation.
Swap Left-Right Swaps the left and right views.
3D View Specifies the rendering mode the effect uses to combine the views.
• Stereo Pair Scales both layers to fit side by side within the effect layer’s bounding box. Select Swap Left-Right to
create cross-eyed vision. Selecting Stereo Pair disables Convergence Offset.
• Interlace Upper L Lower R Takestheupper(first)fieldfromtheLeftViewlayer,andthelower(second)fieldfrom
theRightViewlayer,andcombinesthemintoasingleorasequenceofinterlacedframes.Usethisoptionifyouwant
to view the results with polarized or LCD shutter glasses. Select Swap Left-Right to switch fields.
• Red Green LR Tints the Right View layer red, and the Left View layer green using the luminance values of each
layer.
• Red Blue LR TintstheRightViewlayerredandtheLeftViewlayerblueusingtheluminancevaluesofeachlayer.
• Balanced Red Green LR Performs the same operation as Red Green LR but also balances the colors to reduce
shadows or ghosting effects caused by one view showing through the other. Setting a high value reduces the overall
contrast.
• Balanced Red Blue LR Performs the same operation as Red Blue LR but also balances the colors in order to reduce
shadows or ghosting effects.
• Balanced Colored Red Blue Convertsthelayerintoa3Dviewusingtheoriginallayer’sRGBchannels.Thisoption
maintains the layer’s original colors but may produce shadows and ghosting effects. To reduce these effects, adjust
the balance or desaturate the image, and then apply 3D Glasses. If you are using CG images, raise the black level of
both views before applying the effect.
Balance Specifies the level of balance in a balanced 3D view option. Use this control to reduce shadows and ghost
effects.Thedefaultbalancethat3DGlassessetswhenyouselecttheBalancedColoredRedBlueoptionistheideal