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The word photography means "drawing with light". Controlling or selecting the light a camera records is essential to all aspects of photographic composition.

learn more… | top users | synonyms

35
votes
4answers
10k views

Why do light sources appear as stars sometimes?

See for example this photo: From my experience, the longer the exposure the stronger can this effect be observed. Is this correct? Are there any other factors that influence the creation of these ...
14
votes
2answers
5k views

What is the difference between luminance and illuminance?

The more I read about this, the more confused I become. Illuminance, as I understand it, measured in lux, is the perceived brightness of light on a surface. It's what you'd measure with an incident ...
8
votes
3answers
1k views

Can you photograph the milky way with a full moon out?

Is it possible to photograph the milky way (or just any stars or stellar objects) when a full moon is out?
18
votes
5answers
629 views

Why do two lenses with the same F-number give different amount of light?

Why do the following two lenses provide different amount of light? In both images we have fixed focusing distance, distance to the object, ISO, shutter speed and F-number.
20
votes
8answers
3k views

What's different about photographing at sunrise vs. sunset?

I usually get better light at sunrise (compared to sunset). I do though hate to wake up early in the morning to use that light ;) What are the biggest differences between sunrise and sunset?
19
votes
6answers
1k views

How can one deal with midday light in street photography?

Firstly, of course, photography is all about light, but for doco/street style photography (which is what I like), it's really about being in the right place at the right time. However, I've been ...
9
votes
3answers
909 views

Is the color of the AF assist light important?

What are the differences between white and this darkroom red/orange active autofocus assistance lights?
8
votes
10answers
6k views

How do you avoid a dim portrait with a bright background and no external flash?

I took a picture once in a beautiful location with an awesome background, and a cool location to get the shot. The problem is, the location of the subject had substantially less light then the ...
4
votes
4answers
533 views

Why are these light trails large blobs of light instead of nice thin lines?

I'm trying to shoot a traffic light trails with my point & shoot camera (Panasonic Lumix DMC-LZ8). But the oncoming vehicle headlights are appearing as large blobs of light and not exactly thin ...
9
votes
2answers
444 views

How can I intentionally include lens flare in my photographs?

I usually try to avoid lens flare, usually by avoiding shooting directly into bright lights (or using other techniques to minimize it). However, sometimes I find a situation where lens flare actually ...
8
votes
2answers
765 views

Why are sensors less sensitive to blue light?

This is a followup question to Why is the blue channel the noisiest?. The simple answer to that question is that sensors are less sensitive to blue, and therefore require more amplification, which ...
7
votes
2answers
455 views

Do lenses with the same f-stop but different focal length gather the same amount of light? [duplicate]

I'm taking images of a light source in a scientific labratory, and I thought I had a good grasp on all these things, but now i'm second guessing myself after some results. The most important thing is ...
6
votes
4answers
769 views

Does adding additional strobes cumulatively add to the flash power?

I've been reading articles that talk about using multiple strobes next to each other, all pointing in the same direction: as a means to add more light over what one flash can do. Does the addition of ...
4
votes
4answers
863 views

How do I take a photo of people before a bright window?

How would you take a photo of people who are posing in front of a window? Ideally both the people and the background should be visible. I usually get either the background being overlighted or the ...
4
votes
4answers
639 views

Is there a fundamental difference between emitted light and reflected light?

In the context of practical implications for photography, is there a general difference in the qualities of emitted vs. reflected light (other than emitted light being brighter in many situations)? I ...
10
votes
3answers
347 views

How to engage in photography without a camera?

My digital camera has bit the dust. Now I wonder how to take pictures without a camera. Photography is an art of making images from the light field present at some particular location at some ...
7
votes
1answer
283 views

What is Colour Rendering Index (CRI)?

From this answer on white balancing a LED light I understood there's a thing called Colour Rendering Index (CRI). I understand it has something to do with how well lights reproduce the sun's colour ...
7
votes
3answers
298 views

How do I adjust colour casts between photos taken at different times?

I have several photos of similar subjects on the same background. As they were taken outside at different times, the lighting conditions are different, and so the colours in the photos aren't ...
4
votes
4answers
8k views

What non-studio lights are best for photography?

I don't have a studio, nor I want studio lights. I am interested in knowing which "kinds" of light "bulbs" should I purchase for my "table lamp" for indoor photography? Are there some particular ...
0
votes
3answers
84 views

Style with dim background, warmer tones and subject being almost the only light-emitter?

You can appreciate a slight light-brown-ish look in skin tones and in most other colours, the slow fade to dark in the silhouettes of the subjects and the almost zero quantity of light the camera is ...