Asklemmy

43866 readers

1432 users here now

A loosely moderated place to ask open-ended questions

Search asklemmy 🔍

If your post meets the following criteria, it's welcome here!

Open-ended question
Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
Not ad nauseam inducing: please make sure it is a question that would be new to most members
An actual topic of discussion

Looking for support?

Looking for a community?

Lemmyverse: community search
sub.rehab: maps old subreddits to fediverse options, marks official as such
!lemmy411@lemmy.ca: a community for finding communities

~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~

founded 5 years ago

MODERATORS

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 Pantherina@feddit.de to c/asklemmy@lemmy.ml

59 comments fedilink hide all child comments

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)

you are viewing a single comment's thread
view the rest of the comments

[–] MentalEdge@sopuli.xyz 39 points 1 year ago* (last edited 1 year ago) (2 children)

Feline vision has drawbacks, and some adaptations we don't.

For one, cats have reflective eyes, rather than absorb light, that misses any cones/rods, cats reflect it back out, passing the light that comes into their eyes through their retinas twice. This improves how much of the light actually hits the light sensitive cones and rods in their eyes.

Second, cats have slitted pupils, this means they have a MASSIVELY larger range of light they can adjust to let into their eyes. Slitted pupils are able to close much tighter, and open much wider, than circular ones. If you've ever seen a cats eye in the dark, you know their pupils get HUGE. Several times that of humans.

As for a drawback, cat eyes suck at focusing. All cats are far-sighted. At less than about 20 cm, cats cannot see. All they get is a blurry mess. Ever wondered why your cat seems completely clueless when you set down a treat right in front of it? That's why.

This is why cats have whiskers. Close up, they go 100% by smell, hearing and feel!

[–] 0_0j@lemmy.world 2 points 1 year ago

Woa... you just made me wee bit smarter with this

[–] nitefox@sh.itjust.works 2 points 1 year ago (1 children)

Are vampires just big kitties?

[–] MentalEdge@sopuli.xyz 1 points 1 year ago (1 children)

Why is your account marked as a bot?

[–] nitefox@sh.itjust.works 1 points 1 year ago (1 children)

... dunno?

[–] MentalEdge@sopuli.xyz 1 points 1 year ago (1 children)

It's a checkbox you set in your user settings. Is it checked?

[–] nitefox@sh.itjust.works 1 points 1 year ago (1 children)

it was. I'm not the smartest person alive so it checks out

[–] MentalEdge@sopuli.xyz 1 points 1 year ago (1 children)

Ur still marked as a bot. Did you hit save after unchecking it?

[–] nitefox@sh.itjust.works 1 points 1 year ago (1 children)

yep, it's deselected now

[–] MentalEdge@sopuli.xyz 1 points 1 year ago

Ah, checked your profile from your instance, not a bot anymore, looks like it's just slow to update on mine.