I spent some time playing around with the orientation of images. Instead of having to go to Image>Rotate Canvas>90° CW or 90° CCW, I set up actions for them. To do this, create a blank document. Once you have the document onscreen, create an action called 90 Degrees Clockwise and assign it a keyboard shortcut. Click on Image>Rotate Canvas>90° CW and then stop the action. Do the same for 90° CCW, and be sure that you place both keyboard shortcuts next to one another. It will make working with images a bit easier.