Definition of GOOD / CORRECT EXPOSURE?

Question

I have to do a research on exposure and other stuff for school for a photography assingment. and I have to find a definition for good exposure, I've been looking everywhere, can anybody help me?

Answer 1

"good" exposure is when the picture is exposed correctly to show details in both shadow and highlights.



In modern cameras the built in meters tend to average out the scene with a bit of centre weighting.

So they take the overall scene and take an average reading centred around the middle of the of the picture (usually where the main subject is) this often causes highlights to be blown or shadows to be too dark.

Have a bit of a read about it all here:

http://photo.net/learn/basic-photo-tips/aperture-shutterspeed-iso/

Answer 2

There is no technical definition, a good, or correct exposure is one that has been exposed properly. This is not necessarily quantitative because exposure varies depending on how much light is present within any given frame. The camera's meter will measure that light and give an indication of correct exposure. But "good" exposure depends. It could read an exposure value that is not appropriate for a specific frame -- perhaps there is more highlight tones present within the frame, causing what little shadow or midtones present to be underexposed. The resultant exposure could be varied, or compensated for an amount of light not properly measured by the meter because the meter averages. Your assignment undoubtedly requires you to use your head a little more than simply using google to search for an answer. This is a trick question, because the answer is the question, which means the purpose of it is to inspire you to digress along the lines of how YOU understand what exposure is.

Answer 3

There isn't one, really.

What a camera does is 'think' everything is a uniform gray color that reflects 18% of the white light hitting it and exposes to that level. In other words, if you aim a camera at an 18% gray card and print the resultant photograph, it would (should) look identical to the card you photographed. Why?

In an 'average' scene, this is the sort of gray you would get if you mixed everything visible into a big soup. With a bit of playing around, you can actually do this on your own photographs and get remarkably similar and stable results. I've done it.



Where the 18% gray exposure metering falls flat, however is when you're imaging considerably darker or lighter images. The old 'black cat in a coal shed' would be way, way OVER-exposed by the camera's metering system as it tries to replicate the 18% gray reflectance (when the image itself would only be 'reflecting' about 8% of the light hitting it. In this case, you would have to under-expose by about 2 stops from the metered value to get the 'correct' exposure. Similarly, snow scenes tend to reflect 60~70% of the light and the camera would only be expecting 18% so it would under-expose - causing dirty gray snow. To get the correct exposure, you need to add a couple of stops over and above the camera's metered value.



And that's not even going into tricky lighting where it's important to correctly expose only a small part of a scene - and I daren't venture into 'artistic' license...where the exposures - regardless of what we think, could be construed as 'correctly exposed' to give the artist's desired results...

Answer 4

It all depends on the photographer's intent. Most of the time, one wants detail in the darks and the lights not blown out. Cameras often can not accomplish this, so the photographer needs to decide what is most important. As others have suggested, if you leave it to the camera, it will try to average everything out, even when it's not appropriate.



Also, look up high key and low key photography. A high key image will be almost all white. The photographer chooses to overexpose the image deliberately for artistic effect. Many would say that the shot is overexposed, but it might be quite appealing. It's just the opposite for low key: it would be judged to be underexposed.



So exposure is or should be decided by the photographer and there's no completely correct definition that addresses all situations.

Answer 5

Exposure Meaning

Answer 6

Good exposure is where everything in the viewing plane is lite up enought to see for the dark and not over powering for the white.

I mean you can see depth in the white and black colors not chunks of black and white.

if you can't see the depths then your exposure is not correct.

Or another way you can say it is

Good exposure is a well lite photograph.

Answer 7

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Answer 8

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Answer 9

inflammation of the skin. Infected skin in other words.

Answer 10

Could you give more info?