Sage Dynamics Takes us to School on Parallax

Parallax is a word you’ll inevitably read and hear before to long when it comes to optics on firearms.

Certain optics have a parallax adjustment tool or knob. Certain reddot, reflex, and holographic weapon sights are advertised as being ‘parallax free’ or have so very little it matters negligibly. Others have a fixed parallax distance that covers a practical range for the optic.

But what is it? It’s a distortion caused by light passing through multiple lens combined with needing a proper position for the shooters eye behind the optic to get a proper sight picture. What you see is not always exactly where you are aiming.


Keith Finch
Keith is the former Editor-in-Chief of GAT Marketing Agency, Inc. He got told there was a mountain of other things that needed doing, so he does those now and writes here when he can. A USMC Infantry Veteran and Small Arms and Artillery Technician, Keith covers the evolving training and technology from across the shooting industry. Teaching since 2009, he covers local concealed carry courses, intermediate and advanced rifle courses, handgun, red dot handgun, bullpups, AKs, and home defense courses for civilians, military client requests, and law enforcement client requests.