Rifle Scopes Parallax knob adjustment question?

[Pappasniper]

I have several NF Scopes. On one of them, when I'm shooting to 1K+. I will max out knob to get clear. I like to be able to go past clear to be sure I'm getting max clarity. I end up wondering, if I could go a little further it might be a touch more clear.

What's the best way to correct this?

Or should I say, what's the proper procedure to set up scope from the start?

Thanks

PB

 

[roggom]

The thing is the purpose of the parallax adjustment is to put the object and the reticle on the same focal plane. So if you move your head the reticle does not move in reference to the object you are shooting. Although some manufactures call it "side focus" it is really a Parallax adjustment. The only focus you have is the ocular focus of the reticle to your eye. Sure the image may become clearer when you adjust parallax, but that may not always accomplish both. If you image is way signifcantly out of focus at a given range, but parallax free I would contact NF.

 

[dcjs]

The parallax knob focuses the target image on the reticle plane, that's why it makes perfect sense to call it "side focus". What happens when adjusting parallax isn't any different optically from focusing a camera lens on the film/sensor plane.

If you have doubts about the parallax adjustment going far enough towards infinity, you might want to contact the manufacturer. I'm not aware of any SF scope where this adjustment is designed to be user serviceable.

 

[Pappasniper]

Thanks, understood. lets say you just bought a scope, how do you set it up per se?

 

[HillbillyfromAL]

There's a good write up on the way to setup a scope in the FAQ, or search for getting into long range shooting. If I remember correctly its linked there. Of course owning several NF scopes and shooting out to 1K I think you should have had that figured out by now.

 

[Pappasniper]

That was 1K+ , thats what you get for thinking when you not used to it.

 

[roggom]

The parallax knob focuses the target image on the reticle plane, that's why it makes perfect sense to call it "side focus". What happens when adjusting parallax isn't any different optically from focusing a camera lens on the film/sensor plane.

If you have doubts about the parallax adjustment going far enough towards infinity, you might want to contact the manufacturer. I'm not aware of any SF scope where this adjustment is designed to be user serviceable.

Understood, but we sometimes use the word focus loosely in that the retical plane should be "focused" to the shooters eye with the ocular lens. Turning the parallax knob should bring the object and retical to the same plane. Yes the image should, at that point be: (1) in focus, and (2) parallax free, especially through a Nightforce scope. Using your camera film analogy, we move the parallax knob to "focus" the image onto the film, but the shooter is viewing that image from the other side via the ocular lens. If the ocular lens is not set up correctly, the parallax knob will have to be moved to compensate, in this case the image will appear to be in focus but will not be parallax free. In short, the shooter does not use the parallax knob to focus the image to the shooters eye, if the scope is set up correctly and functioning as designed, parallax and clarity should happen simultaneously. If this is not the case, a call should be place to Nightforce.