this post was submitted on 24 Sep 2023
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Why can't we decrease our eye's FPS to get better night vision? (feddit.de)
submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
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My phone is normally worse for color gradients and contrasts than my eyes. Also, normally it has worse nightvision.

But when decreasing the shutter speed, for example in OpenCamera, I get crazy night pics.

I see that when its dark my FPS goes down, I see less frames automatically and totally cant control that.

Could this mechanism be altered, to have even less FPS but more photons in the soup to get brighter sight?

Yes, trying to hack my eyes here. "Getting used to darkness" is normally the pupils getting wider, there are quite some interesting plants to do that but I havent heard of anything altering the brains image processing.

Edit

I learned:

  • in Nightsight we use the rod cells, which take longer to send a signal. That way they capture more photons, but the "FPS" is lower
  • you can trick your iris naturally to stay open, like the Pirates did (some plants like nightshades also do this, applied locally)
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[–] [email protected] 34 points 1 year ago* (last edited 1 year ago) (3 children)

No, we have a spot in each eye that is not sensitive to light at all because the space is used up by the optic nerves: https://www.scientificamerican.com/article/find-your-blind-spot/

[–] [email protected] 4 points 1 year ago

To add to this there’s a theory amongst creationists that we must be of intelligent design because the eye is so complex and perfect. Not only is this wrong because of the blind spot but another species developed eyes separately and they don’t suffer the same blind spot problem! Notably the nerve channels in octopus eyes allow full coverage.

Wiki: https://en.wikipedia.org/wiki/Cephalopod_eye Illustration: https://commons.wikimedia.org/wiki/File:Evolution_eye.svg

[–] [email protected] 1 points 1 year ago

Oh yeah, forgot about that

[–] [email protected] 1 points 1 year ago

That one does not sit in the center of the retina though, and doesn't have anything to do with higher motion-sensitivity in your peripheral vision. The macula, which the other commenter describes, is what's responsible for that, and it's a different thing than the blind spot.