Traditional Culture Encyclopedia - Photography major - What does VR mean on camera?
What does VR mean on camera?
What does VR on the lens mean? The principle of Nikon VR anti-shake IS basically the same as Canon's IS anti-shake system, which uses floating lenses in the lens for correction. Optical axis deviation? It consists of a detection part, a lens group for compensating vibration and a drive control part. The electronic shock absorption system in the lens detects the slight vibration of the lens, corrects the lens position inside the lens in real time, and effectively reduces the influence of external vibration on the final camera imaging. Nikon VR anti-shake system can reduce the security shutter by up to three gears.
The safety shutter of a camera is based on the reciprocal of the focal length of the lens. For example, when the focal length is 50mm, its safety shutter is 1/50s. If it is lower than this shutter speed, it is easy to shake in theory. From this, we can know that the longer the focal length, the shorter the safety shutter. If the focal length of telephoto lens reaches 300mm, its safety shutter is 1/300 s, and if the lighting conditions are not ideal when shooting, it is difficult to realize the safety shutter and hand-held shooting jitter is inevitable. VR damping technology can reduce the shutter speed of 2-3 gears, so it is more conducive to taking clear photos when the lighting conditions are not ideal and the tripod and other equipment cannot be used. Therefore, compared with professional high-end SLR lenses, it is extremely urgent to popularize VR anti-shake and shock absorption technology for home digital cameras. Especially in telephoto digital cameras, the anti-shake function becomes more important.
Anti-shake can be divided into the first generation (VR) and the second generation (VR II). The first generation can lower the three-stage shutter, such as a 50mm lens. If you don't turn on VR, you need115 seconds to get a clear picture. If you turn on VR,115 seconds can take a clear picture. The second generation can lower the shutter by four levels. The only cheap lens is the VR switch.
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