Wednesday, July 13, 2011

Learning Exposure Triangle : ISO, Aperture and Shutter Speed

If you are reading this article I am sure you are either one of the amateur photogaphers or, just beginning to learn photography. This is for the sole reason that Exposure Triangle is the most basic learning for a person interested even slightly in the realms of Photography (digital or analog).

What is an Exposure Triangle?
It is basically a quick reference diagram to understand and remember Exposure techniques in Photography. Before I entangle you in this triangle, lets explore what is exposure and why should we be conscious about it?
Any photograph that you take is basically a reflection/imprint of the actual, real image on the photographic sensor (camera film) of the camera. For this imprint to be bright/dull/vivid/dark/etc., what needs to be controlled is the amount of Light that falls on the sensor. This is called Exposure (of the film).
ISO, Aperture and, Shutter speed are the different ways of controlling exposure of the photographic sensor. Do not worry if you are not able to comprehend the picture fully. It will become more clear once you read each of these terminologies further.

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

To get the details of each of these terms click on their links. For any explanation on how does light actually forms an image or, on what exposure means (further explanation) leave a comment below and I will answer it to my best.

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