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Why can't we decrease our eye's FPS to get better night vision? (feddit.de)

submitted 2 years ago* (last edited 2 years ago) by Pantherina@feddit.de to c/asklemmy@lemmy.ml

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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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[–] Max_P@lemmy.max-p.me 115 points 2 years ago (15 children)

Eyes don't really have a concept of FPS because we don't have shutters in the first place. The brain is just continuously interpreting what we see. And it fills in a lot of gaps: for example, we technically have a large blind spot right in the middle of the retina, and that's why we're more sensitive to movement in our side vision.

Cats see just fine in the dark, our eyes are just not sensitive enough to low light to be all that useful for us, but we could, if the eyes provided that input. Evolution just made it so we favored speedy and sharp vision in daylight rather than night vision, in part because we quickly developed technology (fire) to keep our areas lit as needed.

[–] NightAuthor@lemmy.world -1 points 2 years ago (4 children)

And by blind spot, you’re referring to the small portion of the vision that sees color and is much much much less sensitive to light (thus horrible at night vision) right?

[–] Max_P@lemmy.max-p.me 32 points 2 years ago* (last edited 2 years 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/

[–] joelfromaus@aussie.zone 4 points 2 years 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

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