Re: What scopes allow for Bindon Aiming Concept?
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BillPrudden</div><div class="ubbcode-body">I hope this was of some help. Sometimes the best-intended answer only makes things worse...
Bill </div></div>
Agreed, and I don’t want add confusion. But guys I see three different sighting methods explained above and I think only one is correctly identified as BAC.
One method described above is to use an optic with little (1X) or no magnification like an EOTech, keeping both eyes open. What registers on your brain is comparable to the image you see everyday, a “seamless” wide screen panoramic. The only difference is that there is a reticle appearing in the view and as both eyes are focused on a target, you are able to “tune” your sight picture based on that information.
Another method described above is to cover the objective of an illuminated optic and shoot with both eyes open. You do get somewhat a similar affect described above. But it seems “off a little” because with the objective lens covered you don’t have the ability to see “beyond the reticle” and focus on the target. You have to make a correction because your brain is attempting to line up the reticle with information from your other eye (the one actually seeing the target). Your brain is still attempting to combine the two images into one image that makes sense.
The third method described above is what Trijicon presents as the BAC. It is similar to the second method but with no cover on the objective. This means that none of the field of view is sacrificed and your eye can focus on objects beyond the reticle when the time comes. So, instead of trying to combine two images, it will select one as a primary and downplay the other as a secondary. There is no superimposed image.
I’m going to attempt to demonstrate how BAC works, right now, where you are sitting. Try these steps below in sequence:
1.) While you are reading this, stay focused on the text but make mental notes of what else you see in the same panoramic image you see now, generated by both eyes.
2.) Now, put your hand up in front of your right eye, about 6-8” in front of it. Keep both eyes open and continue to read. This is similar to covering your objective. Note that you have lost some of your field of view. As you are reading make note of what you see from your left eye. Obviously you are seeing the text, but you are likely also seeing your monitor, maybe a keyboard, a desk, etc. Really focus on what you are seeing. Both eyes are open but the majority of what you are seeing is registering from your left eye, is it not? You are certainly aware of both, but most of what you are registering is from your left eye. Keep your right eye open and your hand up in front of it and proceed to “3”.
3.) In a moment, I’m going to request that you close your left eye for a few seconds, observe what you see, and then open your left eye back up for some additional observations. Before I do I’m going to explain what to expect. When you close your left eye only (right eye is open) your brain will realize the data stream from the left eye has ceased (i.e. is now inferior to the data from your right eye) and it will switch to the perspective of your right eye instantly, and you will see your palm. When you reopen your left eye and continue to read the text that data now becomes superior to what was registering from your right eye, and it again becomes the primary perspective. You’ll see both, but one will dominate over the other.
Close your left eye now. Did you see what happened? Look off at a distance and open and close your left eye and to make sure you see the difference.
As simplistic as it seems, this is the natural response around which the BAC was developed. It’s not about superimposing images, but about the brain’s ability to make a selection as to which eye it wants to primarily receive data from, and make that decision based on the quality and quantity of information available from each eye independently.
When given a choice between a “normal” image and one that appears to be superior (i.e. brighter, more brilliant, and offers more detail like through an optic) your brain will choose the better of the two. In fact, it will always prefer the better of the two which is where the magnification comes in.
The magnification amplifies movement and makes the image through the optic blurry, and the brain will choose the imagery from your “normal” eye, until it perceives the image through the scope is better than the “normal” eye (as in when you slow it down to bring it on a potential target).
With BAC you are always aware of both, but it’s a true “either or” with respect to your focus. This toggle is done without thinking and almost instantly. Neat, ain’t it? (Sorry for being long winded.)
- Fret
