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Side focus scopes |
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troweler
Optics GrassHopper Joined: February/17/2010 Location: SW FLA Status: Offline Points: 31 |
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Posted: February/25/2010 at 19:35 |
I have kind of a dumb question. Does a side focus knob actually adjust the focus of the view in a scope or is it used to correct paralax? Thanks in advance for the replies. It's great to have a forum like this with members who so willingly share thier knowlege and expertise. I have already aquired more imformation from this sight than I will possibly ever actually need I think, but it's sure fun learning from you guys. Thanks again. |
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Atheism is a temporary condition. TRUTH, like gravity will not be altered by what we believe.
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scooterpilot
Optics GrassHopper Joined: February/09/2010 Location: CA Status: Offline Points: 12 |
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Parallax Adjustment
There are two types of parallax adjustment. The first is an adjustable objective, in which the
objective bell itself rotates to adjust parallax. The second is a rotating knob typically on the
left side of the scope, opposite the windage knob.
The adjustable objective is optically simpler, meaning fewer lenses and more clarity and
brightness, but the shooter must reach forward to the objective to adjust it. The rotating knob
adjustment is more convenient since it's located closer, near the rest of the turrets, however,
more lenses are involved which can reduce clarity and brightness. The above is Quote from page six of the below link http://demigodllc.com/articles/practical-long-range-rifle-shooting-optics/?p=6 |
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Chuck
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tjtjwdad
Optics Journeyman Joined: December/11/2007 Status: Offline Points: 365 |
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SF, in addition, the (SF) adjustments tend to be more corse and some, just out right fussy. The AO on the other hand tends to have finer adjustments.
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medic52
Optics Professional Joined: October/05/2006 Location: Missouri Status: Offline Points: 893 |
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Out of all the scopes I own i have only one side focus scope. It has been good so far. It is a Nikon Buckmaster.....
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"The true soldier fights not because he hates what is in front of him, but because he loves what is behind him." G.K. Chesterton
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billyburl2
Optics Master Extraordinaire Joined: January/08/2009 Location: Cottonwood, AZ Status: Offline Points: 4015 |
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The original S.S. 10, 16, & 20x's, plus the 10x HD, all have a "focus" ring that is located on the rear of the scope, by the eyepiece. About where the power ring on a variable power scope would be. So that makes three different kinds of parallax adjustment.
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If it is tourist season, why can't we shoot them?
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troweler
Optics GrassHopper Joined: February/17/2010 Location: SW FLA Status: Offline Points: 31 |
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Thanks for the imfo guys, thats what I was thinking but figured I should ask to be sure.
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Atheism is a temporary condition. TRUTH, like gravity will not be altered by what we believe.
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