One very difficult thing to do with a digital camera is taking professional quality photos. This is because getting a clear image can be difficult, and adjusting the light levels may need to be done by hand. This is why it is an exceptionally good idea to use a digital photography guide. A digital photography guide can show a camera owner how to adjust light levels manually, how to reset the focus features on a camera, and how to add filters. It can even show a person how to do things like changing the aspect ratio of a camera by hand.