Thread: POI Shift?
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Old 12th August 2016, 07:19 PM
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rich rich is offline
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Join Date: Nov 2008
Location: Shebbear, N Devon
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To achieve no POI shift, it needs each of the glass elements to be perfectly ground, to be mounted precisely on the optical centre, the centres of all elements to line up, and the mechanism that moves when the focussing wheel is turned to have no play, yet be free enough to move. That is a big ask and it's frankly a nice surprise that the mid-range scopes are so good.
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