Sunday, August 11, 2013

Importance of Exposure in Photography

Photography is derived from the Greek words phtos- for “light” and –graphos for “drawing”. According to Wikipedia, “Photography is the art, science, and practice of creating durable images by recording light or other electromagnetic radiation, either chemically by means of a light sensitive material such as photographic film, or electronically by means an image-sensor”.
There are many important aspects of Photography like, Exposure, aperture, flash, focus, ISO, lens, depth of field, white balance, shutter speed, metering and post processing. If all of these are in correct combination, it results in a beautiful photograph. Photographers practice for all these above aspects of photography. But it is not a day’s job to master all these terms. So we will start in this article by knowing about the importance of “Exposure”.

Exposure signifies the amount of light recorded on the film or sensor depending on the camera. If the shot is taken in broad daylight and there is too much light hitting on a very high ISO sensor for long, you will end up with a glaring, overly bright and an unrealistic image. While on the contrary, short shutter speed with a small aperture at low ISO has the capability of making a daylight scene look very dark as if shot in the evening. So, right amount of exposure is very necessary while capturing the images.

To get the correct exposure you need to try various permutations and combinations of balancing the shutter speed, ISO and aperture. This is the key to great photography. I will be explaining all these above terms in coming articles.

Well like everything, there is any easy way to adjust the to take care of adjusting exposure settings. It is called bracketing. To bracket a photo manually, you need to set your shutter speed, aperture and ISO to where you think the proper exposure is, then take the photo. Then, adjust the aperture or shutter speed to reduce the exposure slightly and take that photo. Then adjust the exposure so it is slightly more than the first photo and take that one. This series of three photos “brackets” what is, hopefully, the proper exposure. Try to hit the sweet spot between the three to capture the perfect image.


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