The lens of a quasi-professional camera cannot be replaced, but it can be replaced by adding other lenses or lenses. Although its shooting effect is slightly inferior to that of professional cameras, its price is its advantage. Because the price of a quasi-professional camera plus a relatively complete set of additional lenses and lenses is roughly more than 10,000 yuan, which is basically equivalent to the price of an entry-level professional SLR camera body. Therefore, quasi-professional cameras are most suitable for personal high-end users with certain photography skills.

Folding ordinary
Ordinary cameras refer to those products whose lenses can't be replaced and can't be attached with other lenses or lenses. Most of the operations are automatically completed, which is what we commonly call "fool cameras".

We can draw the conclusion that the lens refers to the component that receives the optical object on the camera and adjusts it to realize optical imaging (other optical instruments such as digital cameras and microscopes also have lenses, which have similar functions).

The lens of a camera can be divided into two categories. One is the standard lens that comes with the camera. Generally speaking, the camera will have its own standard lens. The other is the lens that enhances and expands the function of the original standard lens of the camera. We can call them functional additional lenses.

Such as telephoto lens to increase the shooting distance of the camera and wide-angle lens to increase the viewing angle. The lens we are talking about here mainly refers to the latter.