What is your shutter speed?

[limgt]

I mean your eyes' shutter speed?

A very difficult question to answer, in fact I don't know if an answer to that question exist. What we see with our eyes will never go over or under exposed. We always see things at the right exposure. How do our eyes adjust to different lighting conditions? Our eyes' "aperture" adjusts automatically i.e. when you're out on a sunny day, it goes smaller (Higher f-stop) and when you go into a dark room, it goes bigger (smaller f-stop). But what about shutter speed?

It brings me to think that what we see is never what we get in photography.

So what do you think the human being's eyes shutter speed is? And why?

p/s Admins/mods I'm not sure if this is the right section but this is definitely not Off Topic.

[moz]

Wikipedia's article about f/stops says that human eyes' f stop varies from about f/8.3 in very bright environment to f/2.1 in dim lighting.

Here's the article link (http://en.wikipedia.org/wiki/F-number) ...

[Chrischong]

I don't think the human eye has a shutter speed per se...

Having one would imply that it refreshes the same way as a video camcorder, with discrete frames. In turn, this implies that - given a higher shutter speed - we would be able to see breaks in motion (i.e. we'd see a moving object as several discrete objects in a trail rather than a seamless blur).

Unlike the digital world, our world isn't discrete - it's continuous.

Bringing apertures into the equation, I'd like to think that the human eye (and brain) have a much higher tolerance for over-exposure and under-exposure - sort of increasing and decreasing the gain (or ISO, using digital photography nomenclature) to suit the lighting conditions.

Of course, it also helps that the human eye has superior dynamic range, which helps it cope with a small aperture range (if the Wiki link is to be believed).

Just my 2 cents...

[andythology]

my eyes has no shutter. not sure about yours. but I have a eyelids. it 'BULB' for many hours during night, but record NOTHING. ;p

[noordin]

The eye has no shutter so can't compare to that of a camera! But as moz pointed out it has the ability to adjust "aperture". :rasta:

[scotty]

my eye uses live preview. :D attached to a 50mm.

[The Dark]

one thing for sure, It have the best AF system of all. Totally no hunting and works in utmost silence, but mine need a pair of accessory correction filters (AKA spectacles) to focus to infinity.:(

[mobbes]

It brings me to think that what we see is never what we get in photography.

Another diff is we have stereo vision ... whereas the camera captures what a one-eyed jack sees. Try getting the same shallow dof effect with your eyes - very hard. When we focus on a near object, there's no bokeh of the bg ... instead we see two over lapping backgrounds.
Yet another diff is we see in color ... anyone here see in b&w?

[limgt]

Yet another diff is we see in color ... anyone here see in b&w?

My cousin who's color blind see everything in B&W.

[Chinks]

What we see with our eyes will never go over or under exposed. We always see things at the right exposure. That's not true. Ever walk into a dark room from a bright place? Takes some time to adjust. During adjustment you're seeing an underexposed picture.

You can read more about how an eye functions in medical and ophthalmology texts. Heck, Wikipedia is probably quite comprehensive too.

[Chinks]

My cousin who's color blind see everything in B&W.

That's probably inaccurate. There's different types of color blindness. The most common is red/green blindness. They see colour, but find it difficult to differentiate between greens and reds.

[scotty]

sony,canon olympus got their own sensor cleaning mechanism uses sound wave and vibration. where mine uses h2o aka water. :redface: