Photos can be of the utmost importance in a case. A business owner, road crew, homeowner, or landlord could fix the pavement and the evidence is gone. Attempt to measure the uneven pavement with anything you have handy - a ruler, a pen, a piece of paper, a credit card or anything that will demonstrate a difference in height. Place the object against the uneven pavement and take a photo of it. Always photograph both internal and external damage to vehicles.
Internal photos are particularly helpful in showing how an injury to a knee or face occurred.
Many vehicles are totaled and destroyed by an insurance company rather quickly after an accident, so they are no longer physically available. The only evidence you will have is the photographs. Always carry a throw-away camera in the glove compartment of your vehicle. If you are in an accident, these photos could be valuable to your future case. No Polaroid Film.