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ronharper
Pooh-Bah
Reged: 02/14/06
Posts: 1005
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Re: Objective lock-ring collimation
05/29/08 01:08 AM
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One reason roofs (at least the common Schmidt-Pechan prism type) are so "rugged" is that the path of light though the prism is not dependent upon the orientation of the prism. So tweaking the prisms, were it possible, wouldn't do anything. Neither would a slight prism shift from a good slam.
It is unfortunate that things have got to a state where miscollimation is a common problem. That is surely the worst problem a binocular can have, that I can think of. How can you possibly critique color cast, for example, when your eyes are killing you? But there are many slightly worse, but not adjustable, problems that people could be complaining about, if only their binoculars were properly collimated. Maybe miscollimation is a blessing in disguise.
Ron
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