Camera Labs

how many megapixels are human eyes?
how many zoom are human eyes?
color count?

thanks

I know that the human eye is supposed to have an 35mm equivalent focal length of 50mm, that's why 50mm lenses are referred to as "normal".

This might answer some of your questions.

Edited to say 35mm equivalent.

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Graham
Flickr

That's actually for 50mm on a full frame camera (such as Nikon's D3 or Canon's 1D MkIII or indeed a classic film camera). For the rest of us (Nikon's D40, D80, etc or Canon's 400D, 40D, etc) a 35mm will more closely resemble the angle of view of the human eye.

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Nikon D90 + MB-D80 + SB-600 + AF-S VR 18-200mm f/3.5-5.6 + AF-S 35mm f/1.8 + AF 85mm f/1.8 | My photos on Flickr.

I somewhat disagree...science be damned!

I can see a pretty wide field of view incl peripheral vision, so I don't see how 35mm on APS-C (1.6/1.5 w/e) or 50mm on FF equates to the human eye.

And I still haven't seen a number that we can equate to pixels.

I doubt its even as high as 10Mp, just that the pixels are able to gather more light and do so more accurately thats why things appear sharper.

Bio-Sensors, massive dynamic range, perfect sharpness and exposure, noiseless high ISO settings - Gimmeh now!

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Canon EOS 5DmkII + BG-E6 + Canon EOS 40D + BG-E2N + Canon EOS 33
Canon 17-40 F/4L USM + Canon 24-70 F/2.8L USM + Canon 28mm F/1.8 USM + Canon 70-200 F/2.8L USM IS + Canon 85mm F/1.8 USM
Canon Speedlite 580EX II + Canon Speedlite 540EZ + 2 x Nikon SB-80DX
Cactus V2s Wireless Trigger - 5 x Cactus V2s Wireless Reciever

MY FLICKR!

When they say that the human eye is equivalent to 50mm a 35mm camera, they do not count peripheral vision.

Humans eyes have a lens(the lens) an aperture(the iris)and a sensor(the retina). I just wish we had zoom!

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Graham
Flickr

ofcourse we have zoom

We do! It's called legs

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Nikon D700 | 20mm f2.8 | 28mm f2.8 | 50mm f1.8 | 70-300 f4-5.6 | SB800 | flickr | serial photography

Haha! Not quite what I had in mind, but yea I suppose it works.

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Graham
Flickr

A human eye sounds like a great replacement for my 70-300mm AF-G

Just need an F-mount version....




Chris

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Genesis Twickenham 2007

One of the most marvelous things about the human eye is the dynamic range of light that we can see. Everything is perfectly exposed all the time, well almost all the time. For example: when you walk out of a movie theater in day time, we get some serious blow out). Eyes focus REALLY FAST, and are really quiet. A Zoom feature would be cool, but I would probably fall over. try walking with binoculars!

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Jim Hawksworth Flickr
Canon 30D | EF 17-40 f/4L | EF 70-200 f/4L USM | EF 50 f/1.8 II | 580EX II | Berleback 2420 Tripod | and other various tools

.
Oddly enough this question was answered during, if memory serves, this year's Royal Institution annual Christmas Lectures. The answer is around 100 megapixels. Of course visual acuity isn't uniformly distributed and some receptors do colour while others don't. The Mark I eyeball is, for most of us if we are lucky, a pretty amazing thing coupled to an even more amazing post-processor.

Bob.

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OM-D E-M5 + ED 12-50mm, H-PS14042E, H-F007014E, L-RS014150E, M.ZUIKO DIGITAL 45mm 1:1.8.
Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.

mimium focusing distance = 10cm?????

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Canon 1D Classic
Canon 60d
Canon 17-55mm F2.8 IS, 430ex, 50mm F1.8

but increases as you get older.

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OM-D E-M5 + ED 12-50mm, H-PS14042E, H-F007014E, L-RS014150E, M.ZUIKO DIGITAL 45mm 1:1.8.
Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.

I'll need extension tubes soon then -_-

rofl

100MP Finally a figure i can work with. Large Format plates can do (in digital terms when scanned in at maximum quality) around 100MP apparently - Read it somwhere on the net regarding the Megapixel Myth.

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Canon EOS 5DmkII + BG-E6 + Canon EOS 40D + BG-E2N + Canon EOS 33
Canon 17-40 F/4L USM + Canon 24-70 F/2.8L USM + Canon 28mm F/1.8 USM + Canon 70-200 F/2.8L USM IS + Canon 85mm F/1.8 USM
Canon Speedlite 580EX II + Canon Speedlite 540EZ + 2 x Nikon SB-80DX
Cactus V2s Wireless Trigger - 5 x Cactus V2s Wireless Reciever

MY FLICKR!

It's an interesting discussion and the math going into it is extensive.

However, and keeping in tune with the camera-analogy, this is only about the lens.

The eyes do not "see" anything - the brain does. It's a trained behavior based on the brain's interpretation of electrical signals. No actual visuals are passed to the brain - only electricity.

The eyes are analog instruments, not digital, and only in a very abstract sense does it make sense to talk about resolution.

But sticking with the analogy, visual resolution should then be defined as the brain's ability to make a distinction between two almost similar electrical signals. The resolution is: how much of a difference can exist before the brain picks it up.

And that doesn't even begin to tap into the discussion about the brain's ability to "fill in the blanks". Every eye has a blind spot, but we don't see it, because the brain perform a photoshop-like "clone stamp" function without us even noticing.

In truth, I think there are way too many variables to come to a full and meaningful conclusion, since we don't understand the brain nearly well enough yet.

....of course that shouldn't stop us from trying