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Hardware Chapter Camera Node--Shoot Cameras 1

 LOFT生活 2014-11-14
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【Concept】
 
     Shoot cameras (Instamatic / A point-and-shoot camera / anautomatic), is commonly known as a pocket camera, the camera was originally a kind of operation is very simple, it seems that even a fool can use it to capture the exposure accurate, clear images of photographs.
     In addition to simple features, the "fool the camera," also has a small size, light weight, low price and so, so "fool the camera" is also home photography tools in the world's most popular.
 
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【Grip posture term】
 
     Hold the posture is very important, often caused by incorrect posture shooting mistakes. Correct posture is the right hand and holding the camera, the index finger on the shutter release button, the left thumb and index finger hold an L-shaped body, around the elbow close to the body, so you can maintain a relatively stable shoot, effectively avoided hold the image due to the emergence of virtual instability problem.
When you press the shutter in the camera remains stable, do not be too down firmly press the shutter;
      Note should be taken in the finger grip of the camera lens and flash do not stop, and general device in the viewfinder focusing and metering on both sides of the window, this failure phenomenon is more common household everyday photography.
     Another expert cautioned against single-hand grip to shoot, because such a small amount of light multi-body camera, camera shake slightest mistake will cause the image is not real, you will lose it.
 
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【Focus  term】
 
 1. do not artificially adjust the focus will be able to shoot clear photos is very necessary for shoot camera, so most modern shoot cameras with automatic focusing function claims, many tourist spots hundreds of dollars shoot cameras also have played AF banner.
But these low-level compact camera actually does not necessarily have the auto-focus function, it is relying on a block of small aperture wide-angle lens coupled with a large depth of field to achieve substantially sharper results of such use of the focal length of the camera super easy range applicable very small, relatively poor image quality is also some consumer to pay attention to understand.
 2. At present, a number of high-grade multi-use compact camera auto-focus feature, these cameras will have better quality and clarity.
     Some cameras with active autofocus system, some use of passive autofocus system, either way, the accuracy of focus are to meet with the needs of home.
     While the auto-focus function makes clear picture efficiency is greatly improved, but there will still be a bad use of the focus is not real phenomenon, because auto-focus most compact cameras located in the central part of the screen, but sometimes choose photographer based in the body location outside the center of the composition of the picture, then there would have been a clear background and subject blur phenomenon.
     So when the photographer to select the composition should be first lens centering your subject and half press the shutter to lock focus after selecting the composition, so you get a clear image of the body. At present, although some camera uses a multi-point AF system offers a more convenient conditions for the flexible composition.
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【Shutter term】
 
     In the past, a lot of "automatic camera" Only a block fixed shutter speed and an aperture stop;
     Now, autofocus and shutter the program has become the basic performance of a fully automatic compact camera.
     Electronic program shutter with a high degree of automation, wide shutter speed range of features, but also provides the conditions for simplified operation.
     Currently the program increasingly wide range of shutter, the camera can take advantage of many of the high-speed shutter to capture the fleeting moment of dynamic can also use a slow shutter speed night scene of lengthy exposure.
     But there are still a large number of fake "automatic camera" for sale, the recognition method is very simple, and can put the camera in front of a dark press the shutter, then put the camera at the light and press the shutter, if the shutter speed is somewhat on the open market the program automatically changes the shutter may determine; if the shutter speed did not change significantly, then the possibility of this camera uses a single-speed shutter is very big.
     However, single-speed shutter of the camera is not impossible to use, but need to acquire more skills.
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【Zoom term】
 
     Currently, shoot camera with a zoom function occupy the mainstream market, but the zoom ratio is growing, compact camera large zoom ratio can pull very near vision, and can use the telephoto end to close-up shots of people and flowers and delicate views, so shoot camera large zoom ratio occupies a prime consumer market.
     But fool than most big zoom camera there is a serious problem, the maximum relative aperture telephoto end is too small, because the volume is very small pocket camera, so the camera can not do much.
     But after all, the aperture and shutter speed has a direct link, so we can easily use to shoot at the telephoto end of the virtual shoot cameras to take pictures, so the telephoto end compact cameras are generally only suitable for use in low light is very strong, otherwise you need to rely on a tripod to ensure the clarity of the image.
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【Flash  term】
 
     Almost all shoot cameras have a built-in flash, whether it is a single-speed shutter camera, or programmed shutter cameras, flash index is naturally the bigger the better, function better.
     Typically, fool the camera's flash has an automatic flash, forced flash, no flash mandatory, Night Portrait mode flash and red-eye reduction flash and other functions.
     In use, has the following main functions:
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 1, [Auto flash]
 
 Auto flash with the camera's metering system has a direct link, when the light intensity is weak, the flash will fire automatically to enable the body to get proper exposure.
 
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 2, [Flash]
 
 Forced flash fill light can play a role in backlit conditions, of course, eliminate the shadow fill light is also suitable for other scene projected adverse effects on the body.
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 3, [Forced Flash Off]
 
 Since the automatic flash function will start automatically when lighting is poor, so when we shoot some photos require strong texture, the flash of light makes the screen appear bland. At this time the flash is not mandatory, it is very necessary.
 
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 4, [Night Portrait]
 
 In order to avoid instability photographer Hold the camera, the shutter will flash while charging automatically set at a higher gear synchronous speed, so your subject will get the right exposure, but the surrounding environment due to lack of exposure can not be recorded in the the film;
     Night Portrait mode is designed for portraits and low-light environments designed to slow sync flash function, this feature can ensure correct exposure foreground subject while using a slow shutter speed to record the surrounding scenery, but not because of the grip when using the camera steady while moving virtual screen appears, so use Night Portrait mode, consideration should use a tripod or dependent on a fixed object, in order to avoid image blur.
 
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 5, [Redeye]
 
 Many photographers use a flash when shooting portraits have seen the red-eye phenomenon. For multi-camera red-eye phenomenon built-in flash, because the built-in flash and lens position close, exposure time is very short, too late to shrink the pupil of the human eye in low light, while the inner retinal capillary blood reflected into the lens formation.
Very affect the appearance of red-eye photo of the screen, so a lot of compact cameras are equipped with red-eye reduction feature.
     Namely the use of lights or the built-in flash strobe front of the camera to make the subject character's restlessness, in order to avoid the red-eye phenomenon.
     But for the built-in flash strobe mode, this mode will reduce the intensity of the flash.
 
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【Loading volume and rewind term】
 
     Most modern compact camera with a film speed automatic recognition function, mainly the identification of DX-coded film, the common market, and so the film has ISO100,200,400 sensitivity of the points, 100-degree photographic sensitivity is low, but the particles are relatively thin for larger photo enlarged format, but 200 degrees civilian particles are very fine film, the film is more suitable for high sensitivity shooting moving objects or in low light indoor environments, small pocket camera The flash will illuminate farther.
     When installing the film titles to be pulled out moderate length, shall comply with the specific requirements of the camera, the longest end of general titles to more than the red dot marks 2-3mm, after the back cover, turn the power to observe the LCD the film is already counting numbers from "0 (or E)" to "1", if the count is still displayed as "0 (or E)" That indicates that the film is installed incorrectly, you must reinstall the film.
Typically, fool the camera will automatically shoot the film cartridge back after the last one, if you need to quit midway the film, you need to find the manual eject button and find items like a ballpoint pen pressing this tiny device, you can the film successfully quit, this approach will generally be used in time of need enlargements photos.
 
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【Slides and negatives terminology】
 
     CHROME up in foreign countries according to cost even lower than the negative, but negative in the country particularly cheap, all the advantages of disadvantages of reversal are negative, and only one thing: to shoot out of the film can not be watched on the album to a friend, had together playing slide view, reverse printed copy negatives are too expensive and straight.
 But the reverse is not recommended for beginners, after all slides on the wall to see the last fight, often in the size of one meter square, the average P & S can not meet the requirements for exposure and sharpness, but compared to enlargements piece of 3R , a list of all the shortcomings are no doubt.
 Just read the slides shot King, look at the same time and with a negative shot to ensure unwanted photos.
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【Article is excerpted from: Web Search】
【Reserved Integrate / Just Reference】
【Translation is by The Network】

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