Single-lens reflex cameras JVC BN-V114U Battery use only one main component is the lens through the pentaprism and mirror effect in that the framing, focusing and shooting in the same light path completed. When the shutter is released, the first pop-up mirror, allowing the light directly to the film emulsion layer. This constitutes not only to minimize the parallax viewing limits, more importantly, the lens can easily remove at any time, and according to need to replace the lens of different focal lengths, which for photography is extremely important.
Level as the viewfinder shaft next to the camera jvc bn-v107us batterythere are many types, but one thing is common, this is it has a separate optical viewfinder and lens are separated, so the shutter release did not bounce and other activities, such as mirrors, appear to be more convenience for the lightweight, good for hiding. The most significant negative side-axis camera can not switch to the shortcomings of the lens, or available for limited use of the lens, so the shooting has been the biggest constraint on. Shaft next to the camera viewfinder and SLR camera focus accuracy than wild, and only a small number of models can solve the parallax problem.
Part of the shaft in the next grade level as the development of the camera viewfinder and SLR cameras set up a number of similar functions, such as metering and auto exposure, auto focus and has a wealth of accessories, so as to Germany's Leica for the brand logo. More next level as the viewfinder axis evolved into fully automatic camera is pocket-sized model, that is, people commonly known as "fool machine", it makes the popularity of photography toward the more practical and convenient direction.JVC BN-V107U Battery
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