Was reading some notice that their Tact-Zone scope if your eye is not centered that your crosshairs move off bullseye..
I never noticed that but I put my cheek on rest and look as centered as i can..
Is there Paralax in these scopes?If you do not look into scope same way with your cheek on rest does crosshairs move and could you hit way off?
Paralax in scopes
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Re: Paralax in scopes
To me, parallax in a scope is the distance between the crosshairs when viewed through the tube, and the center of the bore (arrow) below it. If you aim at a bullseye at 10 feet, your shot will hit low because of the height of the scope's reticle above the arrow. When you sight in, you are making the arc of the arrow in flight intersect with the line of sight through the scope, at a known distance. Not having your eye in the same position behind the scope for each shot would affect accuracy (similar to not having the same anchor point with a vertical bow), but I wouldn't say it was a result of parallax.
Re: Paralax in scopes
"Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines."
this SO MUCH explains why my kids (right handed) hit a good group wit a different poi than I do (left handed) from my crossbow.
this SO MUCH explains why my kids (right handed) hit a good group wit a different poi than I do (left handed) from my crossbow.
Re: Paralax in scopes
You guys who worry about parallax should do some reading on the subject. I've taken the liberty to quote from this website. http://www.opticstalk.com/what-exactly- ... c5026.html
Parallax is essentially an optical illusion. Parallax presents itself as the apparent movement of the reticle, in relation to the target, when your eye moves off center of the sight picture (exit pupil) or in more extreme cases it appears as an out of focus image. It indicates that the scope is either out of focus or more specifically the image of the target is not occurring on the same focal plane as the reticle. Maximum parallax occurs when your eye is at the very edge of the sight picture (exit pupil). Even when parallax is adjusted for a designated distance, there is an inadvertent error at other distances. Most brands of scopes that do not have a parallax adjustment are pre-set at the factory to be parallax free at or around 100 yards; rim fire and shotgun scopes are set at or around 50 yards. Most scopes of 11x or more have a parallax adjustment because parallax worsens at higher magnifications. Generally speaking parallax adjustment is not required for hunting situations and is primarily a feature used and desired by target shooters. A 4x hunting scope focused for 150 yards has a maximum error of only 8/10ths of an inch at 500 yards. At short distances, the parallax effect does not affect accuracy. Using the same 4x scope at 100 yards, the maximum error is less than 2/10ths of an inch. It is also good to remember that, as long you are sighting straight through the middle of the scope, or close to it, parallax will have virtually no effect on accuracy in a hunting situation.
More reading;
http://riflescopecenter.net/about-rifle-scope-parallax/
https://www.lelandwest.com/parallax-err ... ulator.cfm
https://www.lelandwest.com/parallax-err ... 64e385d607
Parallax is essentially an optical illusion. Parallax presents itself as the apparent movement of the reticle, in relation to the target, when your eye moves off center of the sight picture (exit pupil) or in more extreme cases it appears as an out of focus image. It indicates that the scope is either out of focus or more specifically the image of the target is not occurring on the same focal plane as the reticle. Maximum parallax occurs when your eye is at the very edge of the sight picture (exit pupil). Even when parallax is adjusted for a designated distance, there is an inadvertent error at other distances. Most brands of scopes that do not have a parallax adjustment are pre-set at the factory to be parallax free at or around 100 yards; rim fire and shotgun scopes are set at or around 50 yards. Most scopes of 11x or more have a parallax adjustment because parallax worsens at higher magnifications. Generally speaking parallax adjustment is not required for hunting situations and is primarily a feature used and desired by target shooters. A 4x hunting scope focused for 150 yards has a maximum error of only 8/10ths of an inch at 500 yards. At short distances, the parallax effect does not affect accuracy. Using the same 4x scope at 100 yards, the maximum error is less than 2/10ths of an inch. It is also good to remember that, as long you are sighting straight through the middle of the scope, or close to it, parallax will have virtually no effect on accuracy in a hunting situation.
More reading;
http://riflescopecenter.net/about-rifle-scope-parallax/
https://www.lelandwest.com/parallax-err ... ulator.cfm
https://www.lelandwest.com/parallax-err ... 64e385d607
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