Basic knowledge of camera.

If you remove the camera off any electronic devices and automation components, you will see the same basic structure as follows: one end of a shade cover with a hole to install the camera, opposite the hole with a capacity of chip device for a bearing installation .sensitive film. .In order to produce different light intensities are correctly exposed image, the camera lens has a variable aperture, used to adjust the diameter of <P> out if the demolition of any electronic devices and automated camera parts, you will see the following the same basic .structure: one end of a shade cover with a hole to install the camera, there is a hole in the opposite capacity chip device for loading a photographic film bearing. .</ P> <P> in order to produce different light intensities are correctly exposed image, the camera lens has a variable aperture, to adjust to changing the hole diameter, which is called the aperture. .In a fixed lens compact camera, the lens has no shutter device, known as lens shutter. .The shutter opens, light can be transmitted to the film, the shutter gives you the opportunity to select the exact moment of exposure, and by determining a shutter speed, you can also control the length of exposure time. .In the single-lens reflex camera (referred to as SLR), the shutter device in the fuselage, just in front of the focal plane, called focal plane shutter. .If not, the structure, remove each lens, the film also exposed. .</ P> <P> other cameras have all the parts is the viewfinder. .This is basically a device for observation and composition, which allows the photographer to accurately place the camera at the subject and decided to focus on which part of the subject. .</ P> <P> camera frame 35 mm SLR camera is the most common frame of a smart portable compact camera to use roll film medium frame or film camera with a large size images, the overall resolution and quality are more .High <P> subject and the subject need to have light to give light illumination, so that it can subject the camera the reflected light transmitted through the formation of latent image on film. .</ P> <P> the lens of a simple convex lens can be a piece of frosted glass, it reflects from the subject to be expanded at each point of light, then the light come together to form a coherent point of the focal plane. .When the lens is accurately gathered, the film location of each composite with the focal plane. .</ P> <P> focal plane after it is refracted through the lens of the light gathered together to form clear images of the place upside down. .After running different distances from the camera, the light will be refracted to varying degrees, on aggregate in the focal plane, and therefore need to adjust the focusing device, before and after moving away from the camera lens from the back. .When the lens focus accurately, the film's location and focal plane to be superimposed together. .</ P> <P> aperture diameter of the lens aperture can be adjusted by turning the aperture ring to change. .Reach the aperture on the film dominates the image brightness. .Adjust the nearby f / aperture number, size reduced by half or light volume doubled. .Aperture size also affects the depth of field. .</ P> <P> shutter Shutter speed can be adjusted with different, which may decide the length of film exposure time. .Adjust the shutter speed the rate of adjacent disk block. .Means that doubling the exposure time or shorten the half. .Blade aperture and shutter settings in between shots, or after the aperture. .Press the release button, the overlap of the blades bounce. .The focal plane shutter followed by the two metal curtains open baffle composition. .</ P> <P> pocket straight viewfinder viewfinder display and the lens can not correctly see the same images. .The single-lens reflex camera, the light reflected by a mirror inside the viewfinder. .Dual-lens reflex camera, above the lens for framing, the following lenses are used for shooting. .</ P> <P> the design of single lens reflex camera Single-lens reflex cameras ordinary performance is its unique design of the viewfinder. .The subject of the reflected light through the lens exposure to a 45 degree angle in the side mirrors, and then up the reflection of light entering through the pentaprism focusing screen, the light in the viewfinder through the rear window installed in the transmission out of the camera. .This means that either installed in its focal length lens on the camera how long, the photographer observed through the viewfinder with the camera see the scene exactly. .</ P>.