Throughout this series, we've covered many huge topics (retouching, adjustments, collage, etc.). In this final installment, we fill in the gaps between big thoughts with the more subtle concepts that are essential to taking full control of Photoshop. This is the stuff you rarely see taught, but true experts use on a daily basis. I'll start by revealing a bunch of hidden and hard to find features that you probably don't know exist because you have to type odd keyboard shortcuts or go through other loopholes to find them. I'll then show you how far you can push your adjustments before they start to lower the quality of the image. We'll do that by popping the hood in Photoshop to reveal how those adjustments may be harming the underlying integrity of your image.