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Old Monday 22nd April 2019, 06:45   #5
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Join Date: Jun 2015
Location: Nordschweiz
Posts: 488
Originally Posted by Adun View Post
If you mean whether turning the focuser changes the IPD .....
With the term „rocking“, I actually meant that when turning the focus wheel, focusing occurs un-evenly in the two tubes as the bridge pushes and pulls the eyepieces up and down un-evenly (too much play in the mechanics). This is a frequent complaint about cheaper porro binoculars.
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