#32003/11/26 0:49:27
沉默的王子:
虽然没问我,以下的内容在帮助里找的,也许能有助于你理解.
You can create solid images of any color or size (up to 32,000 x 32,000 pixels) using After Effects. After Effects treats solids as it does any other footage item: You can modify the mask, transform properties, and apply effects to the solid. Use solids to color a background or create simple graphic images.
When you apply an effect to an ordinary layer, the effect affects only that layer and no others. However, an effect can exist independently if you create an adjustment layer for it. Any effects applied to an adjustment layer affect all layers below it in the composition stacking order. An adjustment layer at the bottom of the stacking order has no visible effect.
Because adjustment layer effects apply to all layers beneath them, they are useful for applying effects to many layers at once. In all other aspects, an adjustment layer behaves exactly like other layers; for example, you can use keyframes with any adjustment layer property, and rename the layer. You can also create masks on adjustment layers.
