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POI shift with magnification change

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/01/2011 at 10:22
Gerry Atric View Drop Down
Optics Apprentice
Optics Apprentice

Joined: April/21/2011
Location: Sweden
Status: Offline
Points: 203
Would like to hear the opinion on this old topic, my opinion is that it´s present at least on an all SFP scopes (sometimes in a hardly measurable way, sometimes in an more than evident fashion)
Is there any hard facts that will state my opinion, is it written in any of the manufacturers specs?
I remember (?) a statement from Zeiss: 10mm at 100 meters
Is the POI shift totally out of the equation in a FFP-scope due to the construction ?
Gerry Atric
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/04/2011 at 19:53
koshkin View Drop Down
Dark Lord of Optics

Joined: June/15/2004
Location: United States
Status: Offline
Points: 11743
There is no specific number associated with POI shift in SFP scope due to magnification changes.  It varies between different designs.  It is present in every SFP scope, except with truly good ones it is so small you can't detect it.

With FFP reticles, it can, in principle, be there, but it would have to be a very screwed up scope in a number of different ways.

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