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Exposure Triangle

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Michael Lopez

on 17 December 2012

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Transcript of Exposure Triangle

Triangle Exposure ISO Aperture Shutter Exposure Triangle The exposure triangle is a useful way of describing the relationship between the three aspects of exposure. Adjusting just one of these will make the photo darker or brighter changing the appearance of the photo. Aperture is the size of the opening in the lens when a picture is taken and controls depth of field, or how much of your scene will be in focus. The smaller the aperture, the deeper the depth of field. For example, if the lens focal length and the shooting distance stay the same, the depth of field is much deeper at f/5.6 than at f/1.4. The second part of the Exposure Triangle is.... Depth of field is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image. Depth of field is governed by three factors:
Lens focal length
Shooting distance The greater the shooting distance, the deeper the depth of field. Shutter speed the amount of time that the shutter is open. Shutter speed is measured in seconds or in most cases fractions of seconds. The bigger the denominator the faster the speed
(1/1000 is much faster than 1/30). Slow shutter speed Fast shutter speed ISO is the measure of a digital camera sensor’s sensitivity to light. The higher the number, the more sensitive it becomes. 100: Bright sunny day
200: Hazy or outdoor shade on a sunny day
400: Indoor lighting at night or cloudy conditions outside
800: Late night, low-light conditions or sporting arenas at night As you change shutter speed you'll most likely need to change the aperture too. Understanding the Exposure Triangle Part three of the Exposure Triangle is.... That's all folks.
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