Move your cursor over the image on your left to see the photo after touchup.

Often when one is intent on capturing an image, they are so focussed on the moment that they don’t notice that they are holding their camera at an angle. Above is an example of such a defect. You can easily spot this defect by noticing if the horizon is at an angle or if some flat surface is not completely horizontal. Obviously, you can avoid this problem if you pay more attention to the way you are holding your camera. Here I was too anxious to get a picture of the cruise ship before it sailed out of sight.