Less expensive camera of lower quality present backlighting problems. This appears as bright spot like a starburst or the appearance of lines white running vertically. When we place cameras outdoor especially we should select cameras that utilize DSP (digital signal processing). This allows an excellent picture even in the worst lighting environments. Try everfocus and sony professional type cameras like eq600, eq550, and some examples we warranty against this problem are listed below.
Camera location is important. Placing a camera higher looking down is better than one camera placed looking at the sun directly. A camera with Backlight Compensation is another feature that helps in these situations. Consider light patterns throughout the day.