Limiting adjustments with clipping masks

- [Instructor] As you begin to work with more layers…in Photoshop, you're going to want to control…which layers are affected by the adjustment.…I'll use the adjustment layer icon at the bottom…of the Layer's panel in order…to add an invert adjustment layer.…Because it was added at the top of the layer stack,…all of the layers underneath it are inverted.…If I want to only affect a single layer,…then I can create a clipping mask.…Let's say I want to only affect the upper middle layer.…

I'll reposition the invert adjustment layer…so that it's directly above that layer…in the stacking order and then from the Layer's panel,…I'll choose Create Clipping Mask.…By clipping the invert adjustment layer to the upper…middle layer, I'm restricting the effect of the adjustment…layer to only that layer.…Alright, let's undo that by using command Z.…And this time, I want to affect not only the upper middle…layer, but also the lower left and the lower right.…

So in the Layer's panel, I'll select the upper middle,…I'll hold down the command key and select…