RULERS

I found this to be helpful because I only knew how to do it in lightroom but since this is a photoshop class im glad Vaughn showed me how. :) This is for if you shoot like a drunken sailor and all your images are slightly crooked. I purposely took a really crooked one to make a point. So here it goes. Open a image (duh) Decided what part of the image is straight in reality. In the case of the picture above I knew that the room line was most likely straight.. or at least pretty close. So I just realized I left all my files on a third floor computer so the example I was going to show you is there.. or this one isnt nearly as crooked but its still off. So anyways the roofline would still be the straight part. On you tool bar the rulers button is two above the magnifying glass icon. The shortcut is I, but you have to shift-I until you get the ruler. Anyways once you have the ruler, hold your clicker down and drag it across the part you know is straight, in this case the roof line. It will stay when you let go. Then go to Image>Rotate Cavas> Arbitrary. It will tell you how many degrees your off, click okay. It will then adjust the image for you. You will have some white spaces around the image so then just use your crop tool to crop in a little bit and get rid of the white parts. See the three images. :)