WEEK FIVE

ISO

The ISO is the camera’s sensitivity to light. The ISO is one third of the exposure triangle and effects the brightness of an image by increasing or decreasing the sensitivity of the camera’s sensor.

The higher the ISO number the brighter the image. However, increasing the ISO effects the image quality, such that an image with a very high ISO will be grainy.

Photographing with a high ISO allows for photography in low lighting environments without compromising the ability to hand hold the camera and removes the need for a flash


Exercises

Full Sun

A series of portraits were taken in full sunlight with different ISO settings to demonstrate the ISO’s effect on exposure. In retrospect these photographs were taken with an aperture and shutter speed that were too high for direct sunlight resulting in very blown out exposure, even at low ISO settings.

Shade

A series of portraits were taken in shaded external daylight with different ISO settings to demonstrate the ISO’s effect on exposure.

Low Light

A series of portraits were taken in a dark room with different ISO settings to demonstrate the ISO’s effect on exposure. As the room was very dark there was little that could be seen on most ISO settings. The graininess of the images at high ISO settings is very evident here.

Artificial Light

A series of portraits were taken in a dark room with artificial light using different ISO settings to demonstrate the ISO’s effect on exposure.

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