Pan-Tilt-Zoom (PTZ) cameras are highly useful for monitoring a vast variety of public locations, such as shopping malls, roads or sports arenas. The camera can pan and tilt to cover wide areas, and zoom in on different points of interest. However, a camera mounted in a conventional dome cannot see above its own horizon. This poses a problem in surroundings with differences in altitude, such as escalators, hilly roads or steep stands. The inability to see upwards limits the usefulness of PTZ cameras mounted in conventional domes.
Due to the manufacturing process, a conventional camera dome is not a perfect sphere. Because of this, the image produced by the camera inside the dome will be distorted. Also, when the camera is tilted, the distance between the camera lens and the transparent covering varies, which gives rise to reflections. With Sharpdome, these problems are now part of the past.
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