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South Korea sent a fully-kitted out player for the Olympic shooting. Turkey sent an 51 yr old guy with no specialized lenses, eye cover or ear protection and got the silver medal (files.catbox.moe)

submitted 3 months ago* (last edited 3 months ago) by [email protected] to c/[email protected]

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South Korea’s record-breaking Olympic shooter -Kim Yeji.

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[–] [email protected] 3 points 3 months ago* (last edited 3 months ago) (1 children)

If you’re focusing on the right thing (your sights), the target will be slightly out of focus anyway.

One description I found said that the lens part of her glasses contains an adjustable "iris that can be adjusted to change the perceived depth of field" - which sounds to me like an adjustable aperture in photography. With a smaller aperture (larger f-number in photography) I believe she would potentially be able to have both the sights and the target in focus? Otherwise I'm not sure what the point would be.

Edit; Oh - and the elephant is her daughter's. :-)

[–] [email protected] 2 points 3 months ago* (last edited 3 months ago) (1 children)

As someone else already said, you don't see the target anyway. You focus on your sights, not the target, because unlike stuff like hunting, it's much more important to line up the shot perfectly than keeping track of what you shoot at (the discs tend to not run away). And at 10m, the palm-sized target is just a black circle.

Iirc most people aim below the target on purpose (and adjust the sights) anyway. That stuff confuses the hell out of me when I pick up someone else's gun. Is it set to aim dead center? Is it set to aim just below? Is it set to aim at 4.20 mm to 69° down to compensate for that dude's preference? Who knows!

[–] [email protected] 1 points 3 months ago (1 children)

Yeah - I read the other comments thanks - it would be helpful if you read mine.

So you don't look at the target at all? Like you're only looking at the sights and hope there is a target downrange somewhere? No - right? Because "most people aim below the target" right? And near-sighted people wouldn't need glasses at all if they "didn't look at the target". I don't doubt that the focus is on the sights, but the sights are pointing at something... right?

So what I'm wondering is - what is the point of an adjustable aperture on her lens then? I was speculating that it's because it would keep the tiny distant target in focus while she also lines up the sights. Or maybe it helps keep the near and far posts of the sights in focus at the same time? Human vision can have a pretty narrow depth of field.

[–] [email protected] 1 points 3 months ago

And in fact it seems that my speculation may be correct: https://www.pyramydair.com/blog/2008/06/10-meter-pistol-shooting-part-4/

"Because the light is reduced, the shooter’s eye acts like a camera lens and adjusts the depth of field (range of distances at which objects appear in focus) to the maximum. That’s what keeps both the sight picture and the bullseye in sharp focus, but the shooter wants the front sight to be in the sharpest focus, because it’s what he focuses on."

So you get a sharper target while focusing on the very close (by comparison) sight.