Name: Macro Pupil Constricting in Slow Motion - The Slow Mo Guys
Uploaded: 2020-03-21T17:51:23.000Z
Duration: 8 min 16 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Hello, I'm greg I'm dan we are the slow mo guys and today we're not in my back garden where it's nice and bright

Garage where we keep our props so news you're for us

The reason for that is because we've had a lot of requests to film an iris

Constricting when it comes into a lot of light very suddenly you can't do that outside and we're gonna film this on a macro lens

A thousand frames a second. Usually the macro lenses

we've used their slightly bulky and I think I'd actually

Struggled to get at your eyeball because of your big old eyebrow in the undertow brow an eye socket

So we're using this Laur macro lens, which is a very odd shape

It also has LED lighting and I think with this I'll actually be able to get right up against your ball

My eyeball, oh as long as you know poke my eye out

Nakia something the widest aperture on this lens is an f-14

Which is essentially gonna make it very dark on my shooting out a thousand frames a second

So it's very good that it's got a light on the end of it.

Let's tell you that well, we could either film your eye or I could give you some sort of medical examination

So when set close to infinity looks like just a normal lens

Good, I'd even just my breathing is like rocking me all over the place. Don't bash your eyeball. Oh, see you

This is gonna be one of the easier videos for me

Technically to do because all I have to do is sit in a chair really still

At the same time is not relaxing cuz I'm gonna have a huge lens shoved in my eyeball and a bunch of bright lights turned

Oh my god, that's bright. The thing is me like my heart beating is moving my eye

Off I'm gonna set the frame rate back to a thousand and then I turn the lights off in here for a bit

That is talk. You know, I've got like floaties now

Telling me laughs. Um move. Are you ready? Yeah. Oh

God I can't I've got absolutely doughnut in my eye now like all I can see is a huge fat pink and blue doughnut. Oh

Like it's just got this blue ring in my vision. Uh, it's really weird

Did I think it was it? Alright look at it?

I Think I've ever seen an eye. So open that close

Muscles haven't started moving it. Although they go that's closing. See that. Yeah

That is mental, so the focus has changed slightly I decided you know

Maybe turn the light little less bright I could do it less bright and I can maybe half the framerate

Hmm there 500. Yeah, I think that might be a good idea

The thing is my heart beats like moving me you making me laugh is making me like move a bunch.

Well, this is an amazing me if you can over there. We're on the closest I can be

Flip neck, right? This is what's happening. Okay

First of all, there's like I can hold it there for ages for a start. There's

Immediately like just a flash of just pure brightness

and then it slowly turns into a doughnut like the doughnut is originally like this and then it becomes like a

doughnut with a bigger hole in the middle because my eyes

constricting and then less of it in I can see more detail of the light if you know, I mean

So there's actually a small delay, I wonder how we could probably count that delayed by the friends and you see all these craters

Yeah, they're actually really soft and fibrous like when your eye is completely dilated

Ah, they change shape those holes on the outside of my eye was so much fatter and bigger now, they're like tall

Oh, yeah, weird it like drags the entire pattern and you can actually see them layers

But you can very clearly here see what is on top. And what is underneath of your iris

So weird and like my iris isn't perfectly circular see there's like little bits on the outside like coming around

Oh, it's true. It's crazy to think that every single thing you have ever seen

It's the way behalf of it. This is the closer of them. This is the closest to the window to the soul

You could possibly be you're basically trying to look into my soul here

I reckon I can do this one thing where I like move my iris really like quickly from side to side

Oh you like shake your eyes? Yeah, like shake my eyeball slightly. Yeah like that. Oh,

You went like cross-eyed. I can't do it quite as big as that, but I think cause we're so close

You should be able to see a bit of shaking and when I was filming my eye and I was moving my around I could

Muscle and there's liquid it was like jostling. So wonder if when your eye vibrates would be like like slushie almost weird. Yeah

How's it yeah, oh yeah what's doing it you're there like

Oh, I'm like salsa dancing what I I didn't no idea it was that liquidy

God do you see that? So those areas of your eye where there's kind of almost like craters. Yeah, they're loose

I didn't know that they're like they always have their own eyelids. They do that

look how that the fibers are like closing in and like moving about

Do you see that? It looks like just sort of like a fan, but you're gonna know I

It's almost like a weave like it's all like each one is string. I think that's what it is

Look at jiggles a spaghetti looks like overcooked spaghetti moving around

I don't think I can ever in the future use iris recognition software because everyone has the perfect image of my eyeball

Yeah, exactly and iris Ken does not what you've got the least secure iris now. Yeah, and I've already felt my eye

So we're both toast. Oh, well, hopefully you enjoyed that video or you were grossed out by it

I feel like either one is a victory for us. Please. Feel free to subscribe to the slow

You know a little bit for the next video where hopefully down I'll be able to see you again

Your life's in my hands now gonna drive home with you in the car

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Macro Pupil Constricting in Slow Motion - The Slow Mo Guys

weird

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struggle

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