Camera anti-shake

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It is not important to have the body anti-shake function, as long as the camera has the anti-shake function. It is also important to have a good camera with a large aperture. One mirror is the easiest choice for beginners. After a long time, you will definitely change the lens, but the cost will increase. When purchasing a camera, I suggest you buy a wide-angle lens with a large aperture in one step. In addition, when purchasing a camera, there is no more than checking whether the body carries anti-shake. Now the camera is equipped with anti-shake, so the anti-shake of the body is no longer so important!

Definition of anti-shake
People who contact digital cameras for the first time often have such confusion: the picture is not clear enough, and there will always be a shadow or blur. The reason is that the shutter speed is too low, except for occasional defocus (that is, the camera fails to focus properly. In general, the shutter speed for taking a clear photo should reach the Countdown or even higher of the focal length in hand-held conditions. For example, if the equivalent focal length of the Canon a75 lens is 35mm-105mm, the shutter speed should be at least 1/40 s at the wide angle side to ensure that the photos are clearer, at the focal point, the shutter speed should reach 1/125 seconds. If the light conditions on the scene cannot meet this requirement, it is not that simple to take a clear photo. As you can imagine, anti-shake technology is more necessary for those 10 times of optical zoom products, because these products often have more than 370MM focal points. Therefore, the shutter speed must be above 1/400 seconds to pass, or else you can only sigh.
In fact, in actual shooting, the camera's hand jitter in the film or CCD/CMOS photosensitive process exists objectively, and the defense cannot be prevented, only a special structure can be used to reduce the image blur caused by the jitter of the photographer's hand.

Anti-shake Classification
1. Optical Image Stabilization:As an optical anti-shake technology, it does not prevent the body from shaking, it relies on the structure of a special lens or CCD photosensitive element to minimize image instability caused by jitter during use by the operator. Image Stabilization through the lens set is mainly represented by Canon and Nikon. They rely on a magnetic lens to enclose floating lenses, so as to effectively overcome Image Blur caused by camera vibration, this is more effective for digital cameras with large zoom lenses. Generally, the gyroscope in the lens detects a tiny movement and transmits the signal to the microprocessor to calculate the amount of displacement to be compensated immediately. Then, the lens group is compensated, compensation is made based on the jitter direction and displacement of the lens to effectively overcome Image Blur caused by camera vibration. Currently, only Konica Minolta can achieve anti-shake through CCD. Its principle is opposite to that of Canon and Panasonic's optical anti-jitter technology, and it relies on CCD floating to achieve anti-shake. The principle is that the CCD is first fixed on a bracket that can move up or down the left and right. The gyroscope senses the direction and amplitude of the camera jitter, and then the sensor transmits the data to the processor for filtering and amplification, calculate the CCD movement that can offset the jitter.
2. Electronic Anti-SHAKE:Electronic Anti-shake mainly refers to the anti-shake that uses a digital camera to forcibly increase the CCD photosensitive parameter while accelerating the shutter and analyzing the image obtained on the CCD, and then uses the edge image for compensation, electronic Anti-shake is actually a technique that compensates for jitter by reducing the image quality. This technique attempts to strike a balance between the image quality and the image jitter. Compared with optical anti-shake, this technology costs much less (in fact, you only need to make some adjustments to the internal software of the ordinary digital camera), the effect is also poor. Currently, Casio and Fuji use electronic Anti-shake technology on the market.

Photo proofs
I found several photos taken after I turned on the anti-shake feature on the Internet. These photos were taken after all the cameras turned on the anti-shake feature. If you do not enable image stabilization, a strong virtual image will appear, affecting the overall effect of the photo.

Anti-shake Enabled


Anti-shake Enabled


Anti-shake Enabled

The above is the photo taken after the anti-shake feature is enabled. If the image anti-shake feature is disabled, the image will become a virtual image, which cannot be viewed at all. Now the anti-shake function is integrated into the lens, and only some brand cameras have the body anti-shake function. However, I personally feel that the anti-shake effect of the body is not as good as the optical anti-shake effect. Of course, this is based on the feeling of everyone.