On the right picture in picture 4, the image we see through the red dot cannot be articulated with the background. While there is another kind of parallax on red dot sights which is image shift. Stephen : Yes, usually, the more the difference from the set distance, the more parallax can be observed. So in theory, all red dot sights have parallax, right?
#PARALLAX FREE RED DOT FREE#
In fact, it is not parallax free at 50 yards or 70 yards but we can hardly notice the varying of parallax in this distance range.Įvelyn : I see. When the red dot is focused on the same plane as the target is, there is no parallax Conversely, parallax exists. Stephen : When it comes to a red dot sight, ‘ image ’ and ‘ reticle ’ turns to be ‘ target ’ and ‘ red dot ’. As picture 2 shows, when the image and the reticle are on the same plane, there is no parallax.
#PARALLAX FREE RED DOT HOW TO#
Stephen : Last time I explained scope parallax to you ( More details can be found in ‘ How to understand the parallax phenomenon in your scope? ’ ). Although the parallax setting distance is 100 yards, it seems no obvious parallax phenomenon at 70 yards or even 50 yards. In daily use, you may find this phenomenon. Stephen : No, parallax still exists, but the smallest at this distance, within ± 2 MOA for the normal red dot and ± 1 MOA for the good-quality red dot sight. The distance of this plane is the parallax setting distance which is always set as 50 yards or 100 yards when producing.Įvelyn : Does it mean the red dot sight is really parallax free at this exact distance ？ Simply put, the red dot is not focused on the lens, but on a very distant plane. But the red dot shown on the lens is actually focused at a very long range. The light emitted from the light source is reflected by the lens and eventually enters our eyes. There is a built-in light source in the red dot. Stephen : Let me show you the principle first. will also affect the parallax, but of course the distance is the main factor.Įvelyn : How will the distance influence the parallax? Not only that, the position of our eyes, lens quality, etc. That ’ s why almost all the red dot sights will show the parallax setting distance in the specification.
Stephen : There is a prerequisite for red dot sight ’ s parallax free, it ’ s distance. Evelyn : Stephen, many beginners like me are suffered with scope parallax, shall we just choose a red dot sight for shooting? I heard all red dot sights are parallax free!
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