What is the difference between a telescope and a camera lens?

Telescopes can only be seen with eyes, cameras cannot be directly connected to telescopes, and SLR cameras need to be equipped with lenses to connect telescopes.

If we compare the telescope's telescopic ability and definition, the price of the telescope is one tenth of that of the autofocus lens under the same telescopic ability and definition. That is to say, a lens with a focal length of 18-300 has the same definition and telephoto ability as a telescope with a focal length of 200-300 yuan (even far less than the latter). The main difference between the two is that the telescope can only see the camera lens with the naked eye, and can take pictures and image on the substrate (the camera lens cannot be seen directly with the naked eye).

To sum up, the price of the two is 1 contrast 10,, the telescope can only be seen by the naked eye but cannot be imaged on the negative, and the camera can only be imaged on the negative but cannot be directly seen by the naked eye (first imaged on the negative and then seen by the naked eye).