![]() Amazon is another option, however it lists many “grey market” products (e.g. This isn’t always the case though – many of the cameras listed below are compact and absolutely suitable for both indoor and outdoor usage – we have marked these “indoor/outdoor”.ī&H Photo Video is a good source for buying cameras in the USA. PTZ – Pan/Tilt/Zoom – motorised remote control of the camera’s horizontal and vertical angle and focal length.Īll “outdoor” cameras can be used indoors, however they tend to have larger form factors due to their waterproof housings. ![]() This is not the same as true “zoom” lenses: varifocal lenses are designed to be set once at install time, whereas zoom lenses are designed to be operated continually. Generally, a focal length of 2.8mm is wide-angle 4mm is medium 8mm is moderately telephoto (a bit “zoomed in”). Varifocal – These lenses allow you to adjust the field of view at installation time.P-Iris is more sophisticated and will give better results than than DC-Iris, but both are far better than a Fixed-Iris lens, especially for outdoor applications. Auto-iris – This allows the lens to automatically adjust its aperture based on light levels.Usually the manufacturer will specify the maximum useful range of the IR in meters (though this rating is sometimes overly optimistic). IR – Infra-Red – some cameras include IR LEDs (Light Emitting Diodes) for night vision.PoE – Power-over-Ethernet – when using a PoE switch, the camera draws power over the ethernet cable and so doesn’t require a separate power supply – very useful for easy setup. ![]()
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