Exposure Traingle

by ariches
Last updated 3 years ago

Arts & Music
Graphic Arts

Test Glog

Exposure Triange

Exposure Triange Video

The lower the ISO the better the quality. An ISO of 100 or 200 will give you a better quality photograph than one set at 1600. If the image is destined for website display, then this may not matter. However, if you wish to print the photograph, then you'll want to keep the ISO low. Otherwise it will look grainy or noisy (as it's also referred to).

Shutter speed: Determines HOW LONG the shutter stays open.Examples: A half second exposure is ONE STOP darker than a one second exposure.A 1/125 exposure is TWO STOPS brighter than a 1/500 exposure.A 1/1000 exposure is THREE STOPS darker than a 1/125 exposure.The longer exposures ( like 1 second ) give much MORE light to the film than a 1/1000 of a second exposure. So even though the number may look bigger, don't be deceived!

The combination of aperture and shutter speed are related, and effect the exposure value. The faster the shutter speed, the larger the opening of the lens and visa versa. The diameter of an aperture is measured in f-stops. A lower f-stop number opens the aperture and admits more light onto the camera sensor. Higher f-stop numbers make the camera's aperture smaller so less light hits the sensor. When an aperture is opened up by one f- stop, the amount of light which reaches the sensor is doubled. F-stops are expressed in three different ways: f/8, f-8, and 1:8. Aperture settings can be used creatively to control depth of field, how much of a photo is sharp in front and back of where you focus on the main subject. The technique is useful for close-up and portrait shots.



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