Creating a trail of imagesThis expression instructs a layer to be at the same position as the next higher layer in the Timeline window, but delayed by a specified amount of time (in this case, .5 seconds). You can set similar expressions for the other geometric properties. This expression requires two or more layers. To create a trail of images:
this_comp.layer(this_layer, -1).position.value_at_time(time - .5) |