wondering about paralax on red dots
- Thread starter savagelh
- Start date
Ill play with mine next time Im out and see but its not much to worry about. If your using it for accuracy then a red dot is not a very good option in the first place. I was printing 1" groups at 25m offhand with a TRS-25 on an NEA shorty build this summer so we're not talking about much here.
I thought that was holographic was free of parallax and red dot suffered from it?
If they is no zoom there can not be any parrelax. (this isn't really true but it is.)
Parallax error is in all RDS to some degree. Some are engineered a bit better than others, like the UltraDot Pan AV or Burris Fastfire. They are usually sighted in at around 100 yards where the precision factor is within .5" diameter. The parallax effect is usually down to about .5" by 25yards, and the worst error margin for a good brand is about .75" at close range (10 to 50feet), and .5" at 50+ yards. If you get a cheaper brand, results will vary, as much as 2 inches on some models, maybe more if you get complete garbage.
However, parallax only affects red dot sights when you are looking from off-axis. If you center the dot, all parallax should be irrelevant.
High quality holographic sights are also not free from parallax, however it is usually much more controlled since the angle of the laser is much sharper, which eliminates most of the problem to begin with. At this point parallax becomes completely irrelevent unless you are planning on high precision/competitive shooting - in which you'd have to be accustomed to your sight, or be use to lining up center instead of picking angles.
TLDR;
Doesn't matter that much, you get what you pay for, if you get a $50 sight, take it to the range and try it out to see how much parallax affects it. Should still maintain a 1-2" grouping at 50yards.
However, parallax only affects red dot sights when you are looking from off-axis. If you center the dot, all parallax should be irrelevant.
High quality holographic sights are also not free from parallax, however it is usually much more controlled since the angle of the laser is much sharper, which eliminates most of the problem to begin with. At this point parallax becomes completely irrelevent unless you are planning on high precision/competitive shooting - in which you'd have to be accustomed to your sight, or be use to lining up center instead of picking angles.
TLDR;
Doesn't matter that much, you get what you pay for, if you get a $50 sight, take it to the range and try it out to see how much parallax affects it. Should still maintain a 1-2" grouping at 50yards.
