Exposure triangle

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The exposure triangle is a common way of associating the three variables that determine the exposure of a photograph: aperture, shutter speed, and ISO. One must balance all three of these to achieve a desired result, an adjustment of one requiring adjustments of at least one of the others


Aperture – How much light passes through the lens and depth of field as shown below



Shutter speed –  How long the the sensor is hit with light and affects the movement


The ISO– How much the processor amplifies the light collected by the sensor and the noise


The Exposure Triangle

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