Traditional Culture Encyclopedia - Photography and portraiture - What does the lens in a SLR camera mean?

What does the lens in a SLR camera mean?

The significance of mirrors in SLR cameras is as follows:

1, a mirror goes to the world, which means you only need to take a lens with a focal length of 18-200 when you travel.

2. Because you are away from home, it is inconvenient to take a close-up shot and a long-range shot with a close-up shot and a long-range shot, which takes up both volume and weight.

3. The lens with the focal length of 18-200 has a wide focal length coverage, which can basically meet the needs of shooting close-range and distant view, and the imaging effect is also good.