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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 ...
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 ...
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 ...
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, ...
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 ...
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 ...
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 ...
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: ...
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 ...
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 ...
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. ...
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 ...
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 ...
26
votes
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 ...
8
votes
3answers
737 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 ...