what is it?
The Exposure triangle is a triangle built of three things
- iso – the measure of a digital camera sensor’s sensitivity to light
- Aperture – the size of the opening in the lens when a picture is taken
- shutter speed – the amount of time that the shutter is open
why is there a exposure triangle? |
A photograph's exposure determines how light or dark an image will appear when it's been captured by your camera. Believe it or not, this is determined by just three camera settings: aperture, ISO and shutter speed (the "exposure triangle").
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‘CORRECT’ EXPOSURE |
Normally we are seeking to create an image the depicts, as close as possible, what we saw with our own eyes. Digital camera can’t capture the same range of brightness levels as the human eye, but our aim is to create the best approximation without loosing too much detail in the bright and dark parts of the image. There will always be stylistic differences in what people deem to be the ‘correct’ exposure though. Much like the other ‘rules’ of photography, there’s a bit of room to put your own spin on things and usually it’s pretty obvious when something is wrong versus. simply being a personal choice.
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