All lenses suitable for this body can be installed without special anti-shake components. First, it is beneficial to reduce production costs and obtain price advantages. The second is that in the lens design, on the premise of achieving imaging quality and optical requirements, as few lenses as possible can be used as little as possible, and an extra layer of glass will have a little impact on the image quality.
In the field of electronic cameras, anti-shake has always been a technology that has received much attention, and there are many ways to prevent it. In the actual anti-shake technology, the electronic equipment of the camera usually includes two types of sensor / body anti-shake and optical anti-shake.
principle
Body anti-shake, that is, a gyroscope is installed inside the body of the camera, etc., to detect small movements of the body. And the signal will be sent to the microprocessor to immediately calculate the amount of displacement that needs to be compensated. Then, the drive motor drives the CCD / CMOS mounted on the anti-shake bracket to correct the displacement caused by the external shake of the fuselage. This creates a situation where the body shakes and Cmos does not shake, eliminating blurring caused by shaking.
The principle of optical image stabilization is actually similar to the body image stabilization. It also detects the slight movement of the body through the gyroscope and transmits the signal to the microprocessor to immediately calculate the amount of displacement that needs to be compensated, but this mechanism is installed in In the lens, the compensation lens group compensates for the shake direction and displacement of the lens, not in the body. This effectively overcomes the image blur caused by camera vibration.
Body anti-shake
Advantage
The first is the cost. As long as there is a body, all the lenses suitable for the body can be installed without special anti-shake components. First, it is beneficial to reduce production costs and obtain a price advantage. The second is that in the lens design, on the premise of achieving imaging quality and optical requirements, as few lenses as possible can be used as little as possible, and an extra layer of glass will have a little impact on the image quality.
Disadvantages
However, because CMOS and its auxiliary components are quite large, especially for full-frame CMOS. The size and weight are not low, resulting in its response speed and effect of anti-shake compensation are slightly inferior to the lens using optical anti-shake method. In addition, the power required to drive the anti-shake bracket is not low, which will affect the endurance of the camera. Also, the anti-shake effectiveness of the super telephoto lens is relatively low on the body anti-shake models.
Lens optical image stabilization
Advantage
In lens optical image stabilization technology, the image stabilization lens group is specially designed and produced according to different lenses, and its image stabilization effect is more targeted, so the effect is more obvious than the body image stabilization. For example, Tamron 70-300VCUSD, the anti-shake lens of this lens is correspondingly fast and accurate. It can clearly see the vibration and change of the light path due to lens compensation. Especially after the VC lens is in place, the sense of solidification of the picture is very obvious. Reassuring.
Disadvantages
The disadvantage of lens optical image stabilization is that it will increase the production cost of the lens. If you buy multiple lenses with anti-shake function, the total cost of the extra expenditure is still quite high. And it will slightly affect the image quality of the lens. In general, the current optical anti-shake effect of the lens is the best, generally able to correct 3-4 shutter speeds. The body's anti-shake can also be corrected by 2-3 gears, but because of the inability to accurately design anti-shake characteristics for different lens focal lengths, the flexibility is poor.
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