In dreams, cameras usually represent yourself. The vision obtained through the lens is probably more impartial than the vision obtained through the eye. So dreaming that you photograph something or someone probably indicates a desire to see that thing or person in a more objective and less emotional way than you would in real life. It represents your desire to better focus on a particular person or situation. If the camera does not work well or when developing the picture the image is not clear maybe you are avoiding an issue in real life. It can also refer to your desire to revive the past and keep it forever.
Gallery of dreams
One of the reasons why people always get involved in road accidents is that, they are tired while driving, or that they lack sleep. Many people do not realize that their performance can be highly affected by having not enough sleep. Sleep deprivation can affect reaction as well as decision making, not to mention that it could make a person unable to drive well. It goes the same with drunk driving.
Do animals dream?
Research conducted by various scientists show that animals do experience dream while sleeping. They also experience similar sleep stages like human beings - REM and Non-REM. If you have noticed a dog sleep, it might sometimes wag its tail, this indicates some response to its dream. A study was conducted in a cat by removing a part of the brain stem, which will not prevent it from reacting to the dream during REM. It was noted in some cats they were aggressively chasing mice as in reality.