It’s calculated by camera’s resolution dividing its field of view. Interestingly, there is a parameter called PPF (pixels per foot) that has a huge impact on how well your outdoor IP cameras can clearly identify faces or plate numbers. Of course, with optical zooming capability, users could zoom in to see small details without compromising video quality. For example, IP cameras with 4mm focal length & 1/2.8" CMOS sensor (94 degrees viewing angle) like RLC-822A are better to monitor areas within 100 feet radius. Simply put, wide-angle IP cameras are more suitable to monitor objects of shorter distance.
The longer the camera’s focal lens is, the longer distance it could cover, and vice verse. There is a strong correlation between security cameras' focal length and viewing range, which is in turn directly linked to the viewing angle of CCTV surveillance cameras. Wide-Angle Security Camera VS Long-Range Security Camera Therefore, wide-angle surveillance cameras (CCTV or IP) with varifocal lens do better to zoom out to cover large areas and zoom in to capture small details, for example, this wide-angle outdoor security camera RLC-823A.Ĥ. Varifocal lens security cameras can adjust the focal length, the angle of view and level of zoom while fixed lens security cameras instead can’t do those. Fixed Lens VS Varifocal Lens Security Cameras That's why you can get a 180 degrees wide-angle and neat view of your parking lot.Īs you can see in the picture, which was taken of the front lawn of the yard, you can see the satisfying 180 degree wide angle effect, which came from a Reolink Duo user who shared it, and you can't even see the obvious stitching marks in the centre of the frame.ģ. The key point is that the images provided by each lens can be stitched together. As you can see from its name, dual-lens security cameras are equipped with two identical lenses, each of which monitors a part of the area. The dual-lens security cameras by Reolink, such as Reolink Duo, which were launched recently, can provide a 180 degree wide-angle view. When such a single-lens security camera is designed to offer 150 degrees wide viewing angle or more, the fisheye effect would be too obvious to ignore. Most traditional security cameras are equipped with one single lens, which means their field of wide-angle view is usually limited. Single Lens VS Dual Lens Security Cameras Meanwhile, super wide-angle outdoor cameras could sacrifice some details to get wider viewing angles, which makes it harder to identify faces or other small details.
The innovative dual-lens security camera can monitor your whole parking lot and offer you wide-angle images with nearly no distortion. However, among super wide-angle security cameras (IP or CCTV) especially, fisheye or 360 degrees wide-angle cameras, image distortion is a common problem.
WIDE ANGLE IP CAM INSTALL
It’s true that having a wide-angle security camera helps cover large areas at once, which not only reduces needs to install multiple cameras at one spot but also cuts down installation, maintenance and troubles. Like many other surveillance cameras, a wide-angle IP or CCTV camera has its flaws and benefits, and it always takes a little of effort to fully understand them. Wide-Angle Security Cameras – What You Don’t Know Wide-angle surveillance cameras like PTZ IP camera are commonly seen in large areas like a crossroad, warehouses, parking lots, stadiums, museums, concert halls and etc. Wide-angle IP cameras with 2mm focal length, in general, cover 166.9 degrees wide areas, like fisheye cameras (panoramic video cameras) with 180/360 degrees wide angle. This wide-angle CCTV camera is adequate to monitor front porch, entryway, hallway, side of the door, alley, side door, driveway, and relatively small areas.
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