Electronic or optical viewfinder?

　　Optical viewfinder is very complicated. We often say that the SLR camera, its viewfinder is a mirror and a pentaprism (or five mirror) composed of pentaprism optical technology is relatively high demand for equipment, but also the cost of SLR camera inside a more important piece ( Of course, the five-mirror costs much lower). In fact, the reflex camera is not pentaprism, mirror directly with that side of the mirror can also be, a lot of 120 SLR flat view is like this, look directly at the glass, there are all double-reverse all such.

　　Another optical viewfinder is the paraxial viewfinder. Although the paraxial viewfinder looks like a box, but in fact it is composed of a few pieces, because the viewfinder system and focus system together, so it looks more complicated, but in fact not so complicated, is a Fixed angle lens group, Leica M camera expensive, viewfinder where a few pieces of waste glass, the cost is an important piece.

　　2.5x ViewFinder SK-VF01N
　　Sevenoak SK-VF01 is a 2.5x viewfinder designed for most SLR cameras with 3” LCD screens. It features with 2.5x focusable magnification, an optical designed lens, an anti-fog protective cover, an eyecup preventing light leakage, a 40mm diameter diopter etc. It was connected to the camera via a Baseplate using 1/4 screw. SK-VF01 offers an adjustable diopter that enlarges the LCD image by a factor of 2.5.
　　Size: 15*9*12 cm
　　Product weight: 0.33 KG


　　There is also a King viewfinder, is the Canon G-series card machine on this viewfinder, this viewfinder and the paraxial viewfinder is different, that is, its point of view is not dead, can be changed, which means that the viewfinder system is also a Set zoom lens set, Nikon has several P-series camera, and so on.

　　There is also an external viewfinder, is a wide-angle lens commonly used, in fact, this viewfinder is an external lens, used to let you see what you want to shoot how wide.

　　There is also a mixed viewfinder, then, to mention the aforementioned one, that is, when we take pictures, the viewfinder and exposure are independent of the two processes, although there is certainly a link between the two processes, but in digital photography Times, this connection is not very close. But the next question is, the whole process of photography is like?

　　Photography is definitely the first view and then exposure, we all think so. However, the actual situation in the use of SLR, we do not completely take the picture after the completion of the completion of the optical viewfinder, the viewfinder and exposure are synchronized, that is, you can view while being exposed, because the two processes are inherently Independent of each other, especially in sports journalists, this feature is the most obvious, they are constantly framing and exposure.

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