>Not true... Parallax (side focus) adjustment
>does not focus the reticle.
> It attempts to put
>the target on the same
>optical plane as your scope.
> The diopter ring will
>be what focuses the reticle
>and it can be different
>from person to person.
>Parallax adjustment attempts to minimize
>not having a consistent cheek
>weld on the stock.
>If your parralax is adjusted
>correctly, you'll be able to
>move your head behind the
>scope and the crosshair will
>not move in relation to
>the target. If it
>is adjusted incorrectly, then as
>you move your head behind
>the scope, the reticle will
>appear to move as well.
>
>
>Mike
Sorry Mike when I say focus the reticle to your line of sight this is what I mean
I guess my terms could have been better picked.
As far as it being a necessary option I would say not. In a lot of situations it may even be a hinderance having to turn an extra knob. I think more manufacturers are making them with it just b/c of the increase of interest in long distance shooting. If your gun was going to be a strict long (and I mean long, as I think we forget how far 400+ yards really is) distance shooter it would be more of a necessity. In all reality it's going to be more of a preference for the normal hunter. As for me I typically like buying a scope with the feature. Will I ever really need it, who knows.