ABSTRACT
Next, I’m going to duplicate this layer and double click it to open it in the Layer panel. I’m then going to paint a depth map using grayscale values. I’m going to paint the objects furthest away with black, the kids in the middle with 50% gray, and the part of the image closest to the camera in white. It doesn’t have to be pretty or accurate. You’ll then need to precompose this layer so that it can be used as a map by the Lens Blur effect. Once you’ve precomposed this layer, turn off its visibility. As is usually the case with maps, they do not need to be visible to be used as maps, and it’s usually preferable that they are not seen (Fig. 4.51 ).
