Re: Dumb scope question of the day
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: The Mechanic</div><div class="ubbcode-body"> Pretty much the same as voodoo that is used in the I.O.T.A.</div></div>
Don't see any voodoo there, just a lens with a focal length of ~10 feet in front of the objective, plus an aperture that reduces the detrimental effects to image quality. Set your parallax to infinity and you'll be parallax free at the distance that equals the focal length of the lens. Very much the same principle that is used in a collimator to check scopes for "infinity" at much shorter ranges indoors.
As to my comments on the optical booster in the link above, I didn't mean to say that this doesn't offer advantages for specific uses. Again, this looks like it's just a weak positive lens that magnifies the image, while at the same time sacrificing eye relief. If shortened eye relief isn't a problem, this may be helpful to get a better target image in good light condition. It's just that claims like magnifying and brightening an image at the same time do not comply with the basic principles of physics, and the description is very "creative" overall.