Posts Tagged ‘camera’

Question by water_skipper: How does a camera lense work different from a telescope?
How does a telescope work different from a camera lense? I’m specifically wondering about magnification. With a camera lense, a longer lense means higher magnification so to get really high magnification it needs a really long lense. With a telescope they just change the eyepiece to get higher magnification and don’t change the length of the telescope.. How is it telescopes can change magnification like that and camera lenses can’t? I asked this question under physics already and didn’t get any decent answers.

Best answer:

Answer by mike1942f
In a telescope where you can change the magnification it is a reflecting telescope and the eyepiece goes in the side. What you are actually doing is using a small telescope to look at a small part of the captured image and enlarge it for your eye – you are not changing the light capturing ability or enlargement of the over all telescope.
In a refracting telescope with the viewing on the end through lenses, you are using lenses the same way the camera does – adjusting the focal length and viewing the result.

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