I want to buy a camera. Is the wide-angle function necessary? Why?

Yes, for example, if you want to take a group photo of many people in a small room, a non-wide-angle camera cannot accommodate the extra part of the frame, so a wide-angle camera is very practical.

Wide angle can achieve the following three things:

First, it can increase the sense of spatial depth in the photographic image.

2. The depth of field is long, which ensures that the scenery before and after the subject can be clearly reproduced on the screen. Therefore, the vast majority of modern compact automatic cameras (commonly known as point-and-shoot cameras) use ordinary wide-angle lenses of 38-35 mm.

3. The lens covers a large area and can capture a wide range of scenery. Wide-angle lens

Generally, the so-called wide-angle function on the market is not a real wide-angle, and its wide-angle focal length is generally between 35-38mm. A true wide-angle digital camera is actually a product with a lens focal length covering a 28mm wide-angle. Since the 28mm wide-angle field of view is wider than the most common 35mm and 38mm wide angles on digital cameras, the 28mm wide-angle field of view is 76 degrees, while the 35mm is only 62 degrees, so it can produce a very unique visual effect and accommodate a wider scene. .