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0
votes
1answer
27 views

Color schemes and perception: If L*-linearity does not imply perceptual intensity linearity, then what is the best metric of perceptual intensity? [on hold]

This question was in part motivated by this MathematicaSE question and Matteo Niccoli's geophysics blog post on color schemes. The underlying concept of Niccoli's perceptually-balanced color schemes ...
0
votes
2answers
132 views

Why human eye doesn't exhibit aberrations?

Eye's optical system is composed of single lens and is capable of producing very sharp results, but if I use single lens (monocle) with my camera I'll get soft image.
18
votes
5answers
2k views

Do the infrared photographs really contain infrared colors?

In school, we all learned that from white light we can only perceive the visible spectrum but we can't see UV or the IR portions. If this is the case, then how come we can do infrared photography?. ...
3
votes
3answers
185 views

How to recognize different lighting color temperatures?

I'm getting my first "real" flash soon, and I've been studying a bit about lighting techniques. However, the flash comes with little colored plastic covers to match the color of the environment's ...
0
votes
1answer
88 views

Take a photo and print it to show approximate view of a human from a distance?

If I want to take a photo from about 600' away from my front door, and I want it to emulate what a person would see with unmagnified view, what mm would I set my camera lens length AND then what size ...
9
votes
3answers
866 views

Bokeh of the human eye - How does it look like & vary across apertures and individuals?

Precisely what does the bokeh of a human eye look like? How does it vary over different apertures and different individuals? As a near-sighted person, it is fairly easy for me to get some idea of ...
18
votes
10answers
14k views

How many “MegaPixels” can the human eye see?

There is obviously a limit to what the human body can process, such as frames per second. My question is how many MegaPixels would it take before the human eye can no longer differentiate it from ...
2
votes
6answers
840 views

Does the human eye see moiré?

I was just looking at a highrise building whose windows had a horizontal grill in front of them. There were several clothes drying in these windows and the sun was casting shadows on the cloth. The ...
3
votes
3answers
2k views

What color of light is best for retaining night vision while night shooting?

It takes about 30 minutes for eyes to become completely adjusted to night vision. If a flashlight is needed to illuminate controls while making camera adjustments, what is the best way to protect night ...
11
votes
7answers
22k views

What lens focal length most closely resembles the human eye perspective?

For example, if I have a lens that is 16mm-50mm, which focal length would be the closest to the human eye view? (I don't have a camera yet, so I'm just curious). Would 50mm be more zoomed in than ...
1
vote
4answers
367 views

Why doesn't my camera capture a dark picture when it looks dark to the human eye?

I tried searching for this, but found nothing on this topic: is there a way to set the camera to get images in around the brightness a human eye sees? For example, in bright daylight, I would set it ...
5
votes
4answers
980 views

How does the eye perform the equivalent of white balance? [duplicate]

Possible Duplicate: How can knowledge of human perception of color be used in photography? How does the eye perform the equivalent of white balance? Why is the camera not able to replicate ...
5
votes
2answers
605 views

How does fading light affect color vision?

It's well known that the cones in retina are unable to distinguish colors in dark, leaving us only the monochrome softer vision provided by rods. And personal experience tells this "switch" to ...
5
votes
2answers
761 views

How to calculate the viewing distance giving natural perspective?

When I move my eye closer to a photograph, it will fill a larger part of my view. When I move further, the area filled by the image will become smaller. Apparently, there must be some point where the ...
8
votes
3answers
739 views

How can my eye focus on the viewfinder image?

I noticed that when looking at small items in close distance, minimum focusing distance for eye seems to be about 15cm (6") - closer than that, vision promptly gets blurrier instead of seeing more ...
24
votes
9answers
4k views

Why don't cameras capture dynamic range as our eyes do?

When sitting in a room with no lights on, and I look out the window, I can easily see the interior of the room even if I focus on a tree outside. Why can a camera not capture a similar image to what ...
15
votes
1answer
1k views

Why does a 50mm lens appear to give a human perspective, rather than a normal lens?

I grew accustomed to the notion that what one sees through a normal lens equates (or is close to) what can be seen with the naked eye (although that is not the "pure" definition of a normal lens, ...
5
votes
3answers
2k views

Why milky way galaxy cannot be seen by human eye while by camera?

I was wondering by seeing the photos of Milky way galaxy, that how exciting it would be if we could see all those colors and stars like in those photographs (eg. below). source: ...
8
votes
2answers
2k views

Does the human eye experience noise as a camera would?

I've noticed when I am in very low light (light that isn't in the same room I'm sitting in), when my eyes adapt to the dark that I see colored particles. Do these colored particles resemble noise in ...
22
votes
5answers
10k views

How does the dynamic range of the human eye compare to that of digital cameras?

According to DxO tests, cameras have 10 to 12 stops of dynamic range. Is that correct? Noise can completely screw some lowers values (easily resulting in loss of some stops). Also Norman Koren says ...
9
votes
6answers
4k views

Technically, why is the out of focus area blurred more when using a bigger aperture?

I'm wondering, technically, why and how does the out of focus areas blur more when using a bigger aperture. I think it'd help a lot if I presented a problem that's been driving me nuts for a long ...
0
votes
1answer
202 views

Can the camera be considered to the Human eye? [closed]

So mirrors make you look so big, and some mirrors don't. And they only thing that actually tells you your volume of you body, is the human eye! So, If i took a picture Would it show me, what other ...
25
votes
5answers
1k views

How to create an eye-path?

Reading about photography, I have now and then stumbled on recommendations to "create a path for viewer's eye", or to "lead it through the picture" without any specific guidelines how to achieve that. ...
24
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7answers
2k views

Why are there no dark yellows, or bright violets?

In his book The Photographer's Eye, photographer and author Michael Freeman says: Another consideration is relative brightness. Different hues are perceived as having different light values, with ...
10
votes
2answers
229 views

Does inattentional blindness prevent us from perceiving fresh photo opportunities?

See this article for a fascinating discussion of inattentional blindness: Inattentional Blindness and Conspicuity It says in essence that our mind discards the majority of things we perceive before ...
17
votes
5answers
22k views

How many colors and shades can the human eye distinguish in a single scene?

How many distinct colors, shades, hues, and tints can the average person distinguish in a single scene? In other words, what's the theoretical bit-depth required to be sure of recording a photograph ...
3
votes
1answer
423 views

What is the photopic luminous efficiency function?

What is the photopic luminous efficiency function? Is it actually a the, or are there multiple such functions? Is it an absolute fact of nature or simply an agreed-on standard? If the later, who ...
12
votes
4answers
348 views

What is it called when an object appears to be the same size with the eye and through the camera viewfinder?

I have a Canon 18-135 lens. I am looking into the camera viewfinder with my right eye and not through the viewfinder with my left. I start from 18mm and keep zooming in till I see a particular object ...
22
votes
5answers
5k views

How to capture the scene exactly as my eyes can see?

What settings of my DSLR camera will emulate the scene exactly as I can see through my naked eyes? I think it's not possible to get the contrast and colors exactly as my eyes can see, and it may vary ...
30
votes
6answers
2k views

How can knowledge of human perception of color be used in photography?

How does the human vision system perceive color, and how can/should this be taken into account when taking and post-processing photographs (both in color and in black and white)? The bit above is ...
9
votes
4answers
1k views

How do quirks of the human vision system affect photography?

When looking out at the world through our eyes, it's easy to take for granted that our perceptions are an absolute rendering of How Things Are. But in fact, it's not quite as simple as that. Most of ...
19
votes
3answers
6k views

How does the human eye compare to modern cameras and lenses?

A goal in most photography is to present a scene which resembles what a person who had been there at that moment would have seen. Even when intentionally working outside of that, human vision is the ...
26
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7answers
1k views

Is it possible to be color-blind and still be a good photographer?

Is it possible to be colour-blind (or color-blind, in the US) and still be a good photographer? Are there any steps one can take to mitigate the effects of colour-blindness? Can you point me to any ...