8 times digital telescope camera or 30 times telephoto digital camera, which can shoot far and clearly?

First of all, how to calculate this 8 times and 30 times?

Assuming that the focal length of a lens is 5mm-25mm, the zoom factor of this lens can be calculated as 25/5=5, which is 5 times.

Assuming that the focal length of a lens is 10mm-50mm, the zoom factor of this lens can be calculated as 50/ 10=5, that is, 5 times.

Suppose the focal length of a lens is 24mm- 120mm, then the zoom factor of this lens can be calculated as 120/24=5, that is, 5 times. ...

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To sum up, if you only look at the zoom factor, it seems impossible to decide how far this lens can be shot.

Simply put, how far the lens can be shot depends largely on the size of the focal length, that is, the range of XXmm-XXmm. Generally speaking, the greater the range, the farther you can shoot; Generally speaking, a lens of 24mm- 120mm will shoot farther than a lens of 5mm-25mm, although it can be optically zoomed by 5 times.

Of course, the range of focal length can't determine everything. Whether the lens is shot further depends on the structure, material and manufacturing process of the lens.

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Finally, I want to say that the above content is really complicated. If you really want to know which shot is farther, you'd better use both shots and see for yourself ~ ~ ~