Do you know the basic knowledge of SLR-overcoming hand shake blur through anti-shake function?

Today, a student asked a very interesting question. He asked me: Is camera anti-shake good for health or lens anti-shake? I think this question is very good and suitable for everyone to share. I will share this knowledge with you today, hoping to help you.

First, the camera built-in/lens anti-shake function

Anti-shake is to prevent camera shake, which will blur the image, so the role of anti-shake is to avoid camera shake causing image blur. Many people may say: the camera didn't shake when I took pictures, because the shutter speed was within the safety shutter.

Generally speaking, when shooting with a hand-held camera, the shutter speed of the camera should not be lower than the reciprocal of the focal length of the lens. Give two examples: if the focal length of your lens is 50mm, then your shutter speed should be at least1/50s; If the focal length of your lens is 200mm, your shutter speed should be at least 1/200s. If your shutter speed is lower than the reciprocal of the focal length of the lens, it is likely to cause camera shake and blur the image.

Sometimes we need to shoot with the reciprocal shutter speed lower than the focal length of the lens, but this will cause camera shake and blur the image. If your camera has anti-shake function, you can shoot at a lower shutter speed. For example, shooting with a lens with a focal length of 200mm has no anti-shake function, and the shutter speed should be at least1/200 s. If you have the anti-shake function, you can shoot at the shutter speed of113s, which directly improves the fourth gear.

Camera shake causes image blur.

Second, the camera internal/lens anti-shake principle

There are two kinds of anti-shake, one is camera built-in anti-shake and the other is lens anti-shake. It is troublesome to explain their anti-shake principle. You just need to remember two things. First, lens anti-shake: When anti-shake works, the corresponding lens group will move. The second is anti-shake of the fuselage: when anti-shake works, the photosensitive element will move.

Lens anti-shake components are very complicated, and now most manufacturers are second-generation optical anti-shake.

Anti-shake of fuselage has been developed to the second generation, which is generally five-axis correction.

Third, who is more powerful in lens anti-shake and internal anti-shake?

There is no difference between the two, but each has its own advantages and disadvantages. Everyone needs to know the advantages and disadvantages of lens anti-shake and built-in anti-shake before making a choice. Lens anti-shake is more suitable for anti-shake under telephoto, and the effect of lens anti-shake is better. Anti-shake of the fuselage can effectively deal with the rotation of the fuselage caused by shooting. Combined with anti-shake of the fuselage, many small lenses or fixed-focus lenses without anti-shake can get more use space.

Generally speaking, lens anti-shake is better and more effective, although many people who do fuselage anti-shake are reluctant to admit this. Take two examples: the camera vibration is compensated by the components in the lens, so that the picture we see in the viewfinder is corrected, which will make focus shooting and composition shooting easier and more convenient. If the fuselage is anti-shake, then the picture you see in the viewfinder is not compensated, which is more troublesome to shoot.

When you shoot in a poor light environment, the performance of lens anti-shake is better, because each component of lens anti-shake works independently. In the case of poor lighting environment, it is also necessary to take into account the problems of metering and focusing.

However, there is still a lot of room for development in fuselage anti-shake. In the past two years, camera manufacturers have paid more and more attention to strengthening the anti-shake of the fuselage, and the future can be expected.

The dual anti-shake of micro single body anti-shake and lens anti-shake can achieve the effect of 6.5 files.

Summary: That's all I want to share with you today. If you have any comments or suggestions, please leave a message at the end of the article so that we can communicate with each other.