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Oct 12, 2019 at 12:07 vote accept George Geo
S Sep 21, 2019 at 15:10 history suggested CommunityBot CC BY-SA 4.0
Added the first paragraph about seat height, answering the question more directly. This answer addresses the issue of parallax well, but due to to no mention of seat height it was not the best answer.
Sep 21, 2019 at 5:48 review Suggested edits
S Sep 21, 2019 at 15:10
Sep 21, 2019 at 3:50 comment added user2357112 @WayneConrad: A reflex sight on a rifle works on the same principles as the fighter plane reflex sights described in this answer. Parallax compensation on a telescopic sight (a scope) works differently, if it's there at all - many scopes have no parallax compensation.
Sep 21, 2019 at 1:44 history edited John K CC BY-SA 4.0
added 1 character in body
Sep 20, 2019 at 20:43 comment added Wayne Conrad The HUD's behavior is the same as that of a rifle scope: If you move your eye off center, that does not shift where the reticle is with respect to the target, but the target starts to move out of your field of view. That makes me wonder if a similar principle is at play in a rifle scope as in a HUD (making the light rays be parallel). Nice answer.
Sep 20, 2019 at 19:26 vote accept George Geo
Sep 20, 2019 at 19:26
Sep 20, 2019 at 19:17 history answered John K CC BY-SA 4.0