Rifle Scopes help - proper parallax adjustment

steelcore

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Minuteman
Jul 4, 2010
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South San Francisco, CA
According to what I've read, my parallax was out of adjustment, as my reticle moves when my move my eye. My adjustment problem is finding something in noob speak.

My original understanding is that the ocular ring (very back of the scope) is the parallax. It is to be adjusted so the reticle becomes clear, and left alone. Now I've read to adjust it for each distance, which makes more sense.

What I don't understand is... the reticle clarity doesn't change based on how far out I'm looking, so how do I readjust the parallax if it's still clear?
 
Re: help - proper parallax adjustment

The reticle remains clear. For a given distance, you eliminate the parallax by (1) ballparking it using the graduations on the ring if any, then by (2) adjusting it so that the reticle does not appear to move with respect to the target when you move your head back and forth.
 
Re: help - proper parallax adjustment

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: steel core</div><div class="ubbcode-body">

My original understanding is that the ocular ring (very back of the scope) is the parallax. It is to be adjusted so the reticle becomes clear, and left alone.
</div></div>

This sounds like the focus at the back end of a scope, not the parallax adj, usually the parallax adj has some sort of markings ie: 10yr, 20yr,50yr... to infinity I’ve only used scopes that have the parallax on the front optical bell or the side like a windage adj but on the opposite side. by your quoted description of set and leave it sounds more like your rear optical focus "for lack of better word" which is exactly that you set it once and leave it, with parallax you adjust for the different ranges. What type of optic is it?
 
Re: help - proper parallax adjustment

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: steel core</div><div class="ubbcode-body">According to what I've read, my parallax was out of adjustment, as my reticle moves when my move my eye. My adjustment problem is finding something in noob speak.

My original understanding is that the ocular ring (very back of the scope) is the parallax. It is to be adjusted so the reticle becomes clear, and left alone. Now I've read to adjust it for each distance, which makes more sense.

What I don't understand is... the reticle clarity doesn't change based on how far out I'm looking, so how do I readjust the parallax if it's still clear? </div></div>

The ring at the back is the diopter adjustment, not the parallax. In layman's terms, it is used to focus the reticle to your eye... You need to aim the scope into a clear part of sky then turn the diopter until the reticle comes into focus, while not focusing on the reticle itself. Once you stare at it for extended lengths of time, your eye will start to "bring" the reticle into focus, b/c your eye has the ability of adapting to slight out of focus situations.

Good habit is after you set the diopter, look out to the side of the scope and focus on something far away, then snap your eye back into position behind the scope. The reticle should be instantly clear and crisp. If you find your eye bringing it into focus, you need to do a little more tweaking.

Now for parallax... The parallax adjustment on your scope is meant to bring the target into the same focal plane as the reticle. Having "parallax" means that this is not in proper alignment, thus why the reticle moves around on target.

Here is a LINK to some good reading on the inner workings of a rifle scope and it's functions.
 
Re: help - proper parallax adjustment

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: JRose</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: steel core</div><div class="ubbcode-body">According to what I've read, my parallax was out of adjustment, as my reticle moves when my move my eye. My adjustment problem is finding something in noob speak.

My original understanding is that the ocular ring (very back of the scope) is the parallax. It is to be adjusted so the reticle becomes clear, and left alone. Now I've read to adjust it for each distance, which makes more sense.

What I don't understand is... the reticle clarity doesn't change based on how far out I'm looking, so how do I readjust the parallax if it's still clear? </div></div>

The ring at the back is the diopter adjustment, not the parallax. In layman's terms, it is used to focus the reticle to your eye... You need to aim the scope into a clear part of sky then turn the diopter until the reticle comes into focus, while not focusing on the reticle itself. Once you stare at it for extended lengths of time, your eye will start to "bring" the reticle into focus, b/c your eye has the ability of adapting to slight out of focus situations.

Good habit is after you set the diopter, look out to the side of the scope and focus on something far away, then snap your eye back into position behind the scope. The reticle should be instantly clear and crisp. If you find your eye bringing it into focus, you need to do a little more tweaking.

Now for parallax... The parallax adjustment on your scope is meant to bring the target into the same focal plane as the reticle. Having "parallax" means that this is not in proper alignment, thus why the reticle moves around on target.

Here is a LINK to some good reading on the inner workings of a rifle scope and it's functions. </div></div>

Good post. Simple, easy to understand and pretty much sums up diopter adjustment. Should be a sticky.
grin.gif
 
Re: help - proper parallax adjustment

The SS-10x42M has the parallax on the side. The normal 10x model has the parallax on the rear (where most scopes have their zoom adjustment).

mike
 
Re: help - proper parallax adjustment

make sure that when you are adjusting your diopter that you have the parallax on max range and zoom on max. That's the way the nightforce manual tells you to adjust the eye focus/diopter.

You can also drape a white cloth over the obj too and point it at a light in the house... something so you can see the reticle.