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How it works: the work of the SLR digital camera systems, light mirror through the lens arrived, the refraction and focusing screen to form the above images, and five through the eyepiece prism, we can see in the viewfinder outside interest. In contrast, generally only through the digital camera LCD screen or electronic viewfinder (EVF) to see the captured image. Clearly see the image directly than by processing the image to see more conducive to shooting.

In the DSLR shooting, when you press the shutter button, the mirror will pop up, photo sensor (CCD or CMOS) in front of the shutter curtain will open at a time, through the lens of the light will be projected on the original light-sensitive photoreceptor, and then after Mirror restitution immediately, the viewfinder image can be seen again. Single-lens reflex camera this structure, to determine that it is shot entirely through the lens, it can see the viewfinder image and the film are always the same, it’s the actual shooting range shooting range and essentially consistent, very beneficial to visually framing.

Main features: SLR digital cameras feature a large lens of different specifications can be exchanged, it is natural advantages of SLR cameras, an ordinary digital camera can not compare. In addition, digital SLR cameras are now located in the high-end digital camera, so the relationship between the quality of digital camera photography sensor (CCD or CMOS) in the area, the area of digital SLR is much larger than an ordinary digital camera, which makes the SLR digital camera sensitive area of each pixel is far greater than the average digital camera, so each pixel will also be able to show more detailed brightness and color range, so that the photographic quality digital SLR cameras was significantly higher than normal digital cameras.

Card Camera: the camera in the industry card there is no clear concept, refers only to those small form factor, the relatively light body and ultra slim design is a measure of the main criteria for such a digital camera. Which Sony T series, Olympus and Casio AZ1 Z series should be classified in this area.

Features: Card is not a digital camera can be cumbersome to carry; and put them in a formal setting does not suit pocket coat deformation may fall; a small hand bag ladies no longer difficult to find space squeeze under them; in other occasions, the camera stuffed into jeans pockets or simply hang around the neck is acceptable. Although they function is not strong, but the basic exposure compensation function is standard in ultra-thin digital cameras, plus area or spot metering mode, sometimes these small things can still do some photography. At least you can have a basic picture of the exposure control, coupled with the color, clarity, contrast and other options, a lot of beautiful pictures can be from the “masters” who despise the little things.

Difference between the camera and other camera cards: Advantages: stylish, large-screen LCD screen, compact slim body, easy operation. Cons: manual function is relatively weak, large power consumption of a larger LCD screen, the lens performance is poor.

Telephoto camera: telephoto digital camera that is with large optical zoom models, but the greater the optical zoom and can shoot the scene the more distant. Representative models are: Minolta Z series, the Panasonic FX series, the Fuji S series, the Kodak DX series. Some of the longer lens digital camera, lens and light sensor inside the mobile space bigger, so the zoom is greater.jvc aa-vf7 charger

Features: Features telephoto digital camera and binoculars in fact the principle is similar to the movement through the lens inside the lens to change focal length. When recording a distant subject or do not want to be disturbed by the photographer when the benefits of tele play out. Another longer the focal length is more shallow depth of field, and the larger the aperture the more shallow depth of field effect is the same, shallow depth of field to highlight the main benefits of the virtual background, I believe a lot of FANS in the camera when they pursue a shallow depth of field effect, so the photos are more professional. Some of the longer lens digital camera, lens and light sensor inside the mobile space bigger, so the zoom is greater. Today, optical zoom digital camera 3 times -12 times mostly in between, you can put an object closer than 10 meters to 5-3 meters in the past; also have some digital camera with 10x optical zoom effect. Home video camera 10 times optical zoom in the -22 times the photograph can be more clearly something 70 meters away. Increasing magnification using video cameras to increase the optical zoom.

If the optical zoom is not enough, we can add a multiplier front of the camera lens, it is calculated that a 2 times the Teleconverter, set in an original with 4x optical zoom digital camera, then that digital camera’s optical zoom from 1 times 2 times 3 times 4 times to 2 times, 4 times, 6 times and 8 times, that is a multiple of Teleconverters and obtained by multiplying the optical zoom.

Zoom range the bigger the better? For the overall quality of the lens, in fact the greater the zoom range, the worse the quality of the lens. Super zoom lens 10 times the two most frequently encountered problem is the lens distortion and dispersion. Conditions are more serious purple fringing, large zoom lens is easy to produce barrel distortion at the wide end, and pincushion at the telephoto end of deformation produced, although the lens distortion is inevitable, but good control of the lens will be deformed in a within reasonable limits. And in theory, the greater the zoom, the lens is also more prone to deformation. Of course, many manufacturers have done a lot of effort. Example, manufacturers will often add non-spherical lens in the lens to prevent the generation of the deformation. Dispersion is typically used for anti-dispersion lens manufacturers to avoid, such as Nikon’s ED lenses. With advances in optical technology, the current 10 × optical zoom lens actually performance should meet the needs of our everyday shooting.

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