Quote:
Originally Posted by gregbradley
Oh I realised I said 2 reasons then only posted 1!
The other reason (and I don't know if this is true in some of the high end lenses) is that camera lenses because they are not magnifying so hard as in telescopes, they are not figured to the same accuracy. ...
Greg.
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Well, they do magnify the same - as there's no difference belongs 1000mm focus distance to telescope or lens it's still 1000mm. But scopes are collimated much better - in part because they have less elements in optical path. Especially movable elements. I would think that you are right in your conclusion.