What is the difference between 10x zoom and 20x zoom?

The biggest difference between the two magnifications of zoom is that the shooting distance of 20 zoom will be farther than that of 10 zoom. The digital zoom of digital cameras is generally about 6 times, and the digital zoom of cameras is about 44 times-600 times. In fact, 40 times is enough in use. Because too large a digital zoom will seriously damage the image, sometimes the magnification is too high and the captured image cannot be clearly distinguished.

It is rare to see 20x optical zoom. Like traditional camera designs, optical zoom depends on the focal length of the lens, so the resolution and image quality will not change. Digital zoom can only reduce the original image size, making the image larger on the LCD screen, but it will not help make the details clearer.

Extended information:

Tips for shooting with zoom:

Use long focal lengths to focus. When using a zoom lens, the correct focusing method is to focus with a long focal length first, and then select a suitable focal length before shooting, because at a long focal length, the image of the subject is the largest and the depth of field is the smallest, which facilitates accurate focusing. When encountering backlighting or complex light situations, it also helps to choose appropriate local metering without having to walk close to the subject for metering.

When shooting in daily life, I often use a medium or long focal length zoom lens, use the longest focal length to focus and meter, lock the exposure, and then select the ideal focal length to shoot, so that there is no need to move back and forth. pace.

Baidu Encyclopedia——Zoom