What is photography and lens imaging?

In fact, the lens of a camera is composed of multiple convex lenses and different concave lenses. These lenses are combined into a convex lens with variable focal length. By adjusting the distance between these lenses, the focal length of the lenses can be changed. So that objects with different distances can be clearly imaged. For middle school students, we can regard these lenses as convex lenses, so they can be regarded as convex lens imaging. Become a real reflection.

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