You know what a dome camera is. These appropriately-named devices house their cameras indomes, of all things. The dome itself is not a lenshowever, it obscures the direction in which the camera is actually pointing. Most individuals who are up to no good will not want to take the chance that the camera is pointed somewhere else. They may not even know how exactly a dome camera works.Domes camera models are most effective in in-door, well-secured settings. Criminals who see a dome camera will most likely move on to a less challenging areain some cases, it may not even be necessary to have a camera in the dome. These faux cameras are known as dummy cameras, and you can find more about them elsewhere on the site.Dome cameras can be used outdoors if their dome is strong enough. Some domes, such as those made from reinforced polycarbonate tamperproof armor, are capable of withstanding sledgehammer blows. These cameras can also be installed indoors, of course, but you will have to consider whether or not someone is actually likely to carry a sledgehammer in to your store or business.Many dome camera models start under 100, but you will obviously pay more for more resilient models. In the case of night-vision and/or high-resolution video dome cameras, there will also be an additional cost in exchange for a higher-quality picture. Dome cameras are mounted on the ceiling or on the walls. As with any camera, their focal range will depend on the lens sizein the case of the high-resolution models mentioned above, the lens may be varifocal, meaning that it will automatically adjust its width for the clearest picture.