Exposure in Photography

Did you know for a picture to look great and appealing all you need is light? I know you wondering how light can be the only necessity to good images let me teach you. Light is always your best friend and worst enemy as a photographer since is all you need to compose the perfect image.

Exposure refers to the amount of light allowed to compose an image, also can be defined to as the camera settings used to capture a particular photo. Exposure can be in three categories when composing an image; over exposure, normal exposure and under exposure.

Over exposure refers when an image is exposed a lot of light thus affecting the colour of the image as well as losing the details. Normal exposure refers to when an image is properly exposed to light achieving the best quality images. As a photographer always ensure that your picture is nicely exposed for your images to stand out. Under exposure means an image has not received the required amount of light resulting to dark images and losing details as well.

There are three elements of exposure; Aperture, Shutter and ISO they are the key basics when dealing with composition of a picture. Aperture deals with the opening and closing of the lens and controls the amount of light passing through to reach the sensor or film. The aperture also helps in changing the depth of field which means the area in a photo that has sharp focus.

Shutter is responsible for controlling the opening in the camera body that opens allowing light to pass through to the sensor hence capturing a photo. Shutter speed is the duration that the shutter remains open allowing light to reach the sensor and it’s controlled in seconds. It’s with this shutter speed that one can use to freeze and blur images in action and sports.

ISO refers to the sensor or film sensitivity to light, the higher the value the brighter the photo and vise versa. One disadvantage of ISO is once it’s increased your image starts having some grains hence distorting your image.

Finally we have the exposure modes while dealing with photography for one to have your picture stand out among the rest. AV(aperture priority) here the camera selects the appropriate shutter speed needed to achieve the correct exposure.

TV(shutter priority) this is where you select the shutter speed and the camera selects the proper aperture to achieve the exposure needed.

P(program) here the camera selects the aperture and shutter settings needed to have the proper exposure but the photographer can manipulate the settings if he/she wishes.

Exposure compensation used to alter the exposure chosen by the camera metering so as to brighten or darken the photo according to the photographer’s satisfaction.

Once you understand the function of each of these settings then be sure to achieve quality and detailed pictures that will market you. Again practice will always enhance your understanding to these parts even more.

Story by
Tyson Kiiru

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