What is an idiot camera?

"Fool camera" is the common name of pocket camera. It turns out that this camera is very simple to operate, and it seems that even a fool can use it to take photos with accurate exposure and clear images. In addition to simple operation, the "fool camera" has the characteristics of small size, light weight and low price, so it is also the most popular home photography tool in the world.

With the development of science and technology, there are more and more varieties of "fool cameras", the technology content is getting higher and higher, and the operation seems to be getting simpler and simpler. Nevertheless, people who use the "fool camera" well are not in harmony with the owner of the fool camera. Photos with blurred images and inaccurate exposure are very common in daily family photography. It can be seen that playing a pocket camera well also requires certain basic knowledge and operating skills, otherwise playing a "fool" is likely to be played by a "fool". Let's use cartoons to see some basic knowledge and operation skills of the camera. Some basic skills seem simple, but if you don't pay attention, it may bring bad consequences to your photos.

Maintain posture

The holding posture of pocket camera is very important, and incorrect posture often leads to shooting mistakes. The correct posture is to hold the camera in the right hand, press the index finger on the cable release button, hold the fuselage in an L-shape with the left thumb and index finger, and keep the left and right elbows close to the body, thus maintaining a relatively stable shooting state, effectively avoiding the problem of image blur caused by unstable holding. Keep the camera stable when pressing the shutter, and don't press the shutter too hard; When shooting, be careful not to block the lens and flash with your fingers, as well as the focusing and metering windows on both sides of the viewfinder. This kind of mistake is common in family daily photography. In addition, experts warned not to shoot with a pocket camera in one hand, because this kind of camera is small and light, and a little careless camera shaking will lead to image distortion, and it is too late to regret it.

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It is very necessary for a fool's camera to take clear photos without artificially adjusting the focal length, so most modern fool's cameras claim to have autofocus function, and many hundred-dollar fool's cameras in tourist attractions are also under the banner of autofocus. However, these low-end pocket cameras do not necessarily have autofocus function, and rely on wide-angle lenses with small aperture and large depth of field to achieve basically clear shooting results. This simple camera using hyperfocal distance has a very small application range and poor imaging quality, so we should pay attention to consumption.

At present, some middle and high-end pocket cameras on the market mostly use autofocus function, and the clear image quality of these cameras is very good. Some cameras use active autofocus system, while others use passive autofocus system. Either way, the focusing accuracy can meet the needs of users. Although the auto-focus function greatly improves the clarity and efficiency of photos, it will still be out of focus if it is not used well, because most pocket cameras have auto-focus in the center of the picture, and photographers sometimes choose to set the subject outside the center of the picture, so there may be cases where the background is clear and the subject is blurred. Therefore, when choosing a composition, the photographer should aim the lens center at the subject first, and then select a composition after half pressing the shutter to lock the focus, so as to obtain a clear image of the subject. At present, although some cameras adopt multi-point autofocus system, it provides more convenient conditions for flexible composition.

shutter

In the past, many "automatic cameras" only had a shutter speed and a fixed aperture; Now, autofocus and programmed shutter have become the basic performance of fully automatic pocket cameras. Electronic program shutter has the characteristics of high degree of automation and wide shutter speed range, which also provides conditions for simplifying operation. At present, the range of program shutter is getting wider and wider. Many cameras can capture fleeting dynamic moments with high-speed shutters, or they can expose night scenes for a long time with slow shutters. However, there are still a large number of counterfeit "automatic cameras" on the market, and the identification method is very simple. Generally, you can press the camera in a dark place first, and then press the camera in a bright place. If the shutter opening speed changes, it can be determined that it is a program automatic shutter; If there is no obvious change in shutter speed, this camera is likely to adopt a single-speed shutter. But the single-speed shutter camera is not useless, and it needs more skills.

zoom

At present, cameras with zoom function have occupied the mainstream of the market, and the zoom ratio is getting bigger and bigger. Pocket cameras with large zoom ratio can bring the distant view very close, and fine scenes such as people's close-ups and flowers can be photographed by using the telephoto end, so cameras with large zoom ratio have an excellent consumer market. However, most fool cameras with large zoom ratio have a serious problem, that is, the maximum relative aperture of telephoto end is too small, because the size of pocket camera is very small, so the lens can not be made very large. But after all, the aperture is directly related to the shutter speed, so it is easy for us to take a virtual image with the telephoto end of a fool camera, so the telephoto end of a pocket camera is generally only suitable for use in the case of strong light, otherwise a tripod is needed to ensure the clarity of the image.

flashlight

Almost all stupid cameras have built-in flash. Whether it is a single-speed shutter camera or a program-controlled shutter camera, the greater the flash index, the better, and the more functions. Usually, the flash of a fool camera has the functions of automatic flash, forced flash, forced non-flash, portrait mode flash at night, red-eye flash prevention and so on. In use, it mainly has the following functions:

1, auto flash: auto flash is directly related to the camera's metering system. When the light intensity is weak, the flash will automatically flash, so that the subject can get proper exposure.

2. Forced flash: Forced flash can fill the light in the case of backlight. Of course, fill light is also suitable for eliminating the adverse effects of shadows in other scenes on the subject.

3. Forced non-flashing: Because the automatic flashing function will start automatically in the case of insufficient light, when we take some photos with strong texture, the lighting of the flash will make the picture look dull. At this time, it is very necessary to force not to flash.

4. Night portrait mode: In order to prevent the photographer from holding the camera unsteadily, while the flash is charging, the shutter will be automatically set at a higher synchronization speed, so that the subject will get proper exposure, but the surrounding environment will not be recorded on the film because of insufficient exposure; Night portrait mode is a slow synchronous flash function specially designed for portrait shooting in low light environment. This function can record the surrounding scenery with a slow shutter while ensuring the correct exposure of the foreground subject. However, when it is used, the picture will be blurred because the camera is unstable. Therefore, when using the night portrait mode, you should also use a tripod or fix it on a fixed object to avoid image blur.

5. Anti-red-eye flash: Many photographers have seen red-eye phenomenon when shooting portraits with flash. Red-eye phenomenon is mostly caused by the built-in flash of the camera, because the built-in flash is very close to the lens, the illumination time is short, the pupil of the human eye can't contract in weak light, and the blood in the retinal capillaries is reflected into the lens. Red-eye photos greatly affect the beauty of the picture, so many pocket cameras are equipped with red-eye reduction function. That is, the strongpoint in front of the camera or the built-in flash is used to narrow the pupil of the subject to avoid red eye. But for strobe mode with built-in flash, this mode will reduce the intensity of flash.

Loading and rewinding

Most modern pocket cameras have the function of automatically identifying the film sensitivity, mainly identifying the DX code of the film. Common films on the market are divided into ISO 100, 200, 400 and so on. 100 degree sensitivity is low, but the particles are fine, which is suitable for enlarging photos with larger frames. However, the current 200-degree film is also very fine, and the film with high sensitivity is more suitable for shooting moving objects or pictures. When loading the film, the length of the film head should be moderate and meet the specific requirements of the camera used. Generally, the longest end of the film header is 2-3 mm longer than the red dot mark. When the power is turned on after the back cover is covered, pay attention to whether the number of films on the LCD screen changes from "0 (or e)" to "1". If the counting display is still "0 (or e)", it indicates that the film is not installed correctly. Usually, the camera will automatically put the film back in the cassette after taking the last photo. If you need to withdraw the film halfway, you need to find a manual film withdrawal button, find a ballpoint pen and other items to press this tiny device, and then you can withdraw the film smoothly. This method is generally used when it is urgent to print more photos.