![]() ![]() To keep parallax from being a problem, riflescope manufacturers set the parallax at a certain distance or build parallax adjustment into the scope. The parallax adjustment on a riflescope simply positions the reticle focus and the image focus at the same spot. If your eye is slightly off the centerline, the reticle can point to a different place. However, that’s almost impossible to do- perfectly-all the time and every time. One way to eliminate parallax in a riflescope is to position your eye so that the center of your pupil is perfectly in line with the center of the riflescope. How to Eliminate Parallax in a Rifle Scope Focus the reticle and image in the same place, and the reticle will stay still, leading to a more accurate shot on target. The goal of any rifle shooter then is to get the reticle to stop moving by eliminating parallax-which works just like laying the phone on the table. When the reticle and the target are not focused in the same place and you move your head a little bit, the reticle will move. Imagine your phone is the reticle in your riflescope and that everything behind your phone is the image-target or animal-you see through the riflescope. Ok, cool experiment, but what the hell does this have to do with a riflescope? This is where it gets hillbilly simple. Everything still shifts when you switch eyes, but the phone and table shift together because they’re in the same place. Now, lay your phone on a table and do the same thing. It also happens because the stuff you see beyond your phone is, well, beyond your phone. The first is because your eyes are about 2.5 inches apart each eye looks at the phone from a different position. Notice how everything beyond your phone moves from side to side as you switch eyes. Hold your cell phone up and look at it with one eye at a time. Try This Experiment to Understand Parallax I’m sorry, but what the hell does that mean? Let’s see if I can provide a hillbilly translation. According to Merriam-Webster, parallax is the apparent displacement or the difference in apparent direction of an object as seen from two different points, not on a straight line with the object. Parallax is a simple concept to understand, but as it relates to riflescopes it’s difficult to explain. We may earn revenue from the products available on this page and participate in affiliate programs. ![]()
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