Rustystud said:
I recently bought a SIII Illuminated 3.5 X 10 X 44 30mm scope for my model 7 Remington 308. I had a Leupold VXIII 2.5 X 10 X 36 on it.
The new Sightron SIII does not have a conventional cross hairs. The reticle is etched in glass. There is a very small dot (Illuminated by restat)and both vertical mil rads. It has Target style turrent knobs(1/4 min clicks) and a side focus. The occular lens has a paralax focus. So far this scope has exceeded my expectations. The fine lines take some getting use to and they (with out the illuminated dot) would rule out any moving shots.
Tracking has been superb during the sigh in process.
I would never buy a scope without the ability to focus and adjust for paralax.
Nat Lambeth
Now I am 100% confused?? Parallax and Ocular are two different things altogether. Ocular ajustment is done with the eye piece, it is where you focus the cross hair and focus, Parallax is adjusted by the bell of the scope or with a side knob if the scope has parallax adjustment to start with.
Parallax occurs when the image rays from the object being viewed do not fall precisely on the reticle plane. Since a gap exists between the two planes, moving your eye off center to the edge of the exit pupil will produce an apparent movement of the reticle in relation to the target. If the eye is not moved off center in the exit pupil, parallax error cannot be discerned and there will be no POI (point of impact) shift in firing.
When a scope is free from parallax, it is also at its best focus.
@ least this is my take on it.
Wayne.