Author: Unknown
•3:03 PM
By Tobias Sterling

Whether novice or amateur, we have all experienced the same common frustrations. Perhaps you are taking a photo of snow on a bright day only the photo turns out too dark or perhaps you are photographing something in the dark, only the photo turns out too bright. So, why does this happen?

Most often, many camera owners falsely believe that they can simply turn on their camera, point and shoot and they will reproduce the scene they were viewing. However, this means your camera is in automatic mode which means it must make its decisions on proper settings for the photo.

Unless you are using a fully manual camera, your camera must make the decision as to how much light to allow the sensor to be exposed to. If there is too little light, the subjects of the photograph may appear almost invisible, also known as 'underexposed." In reverse, if there is too much light allowed, areas of the photo may be completely white, also known as "overexposed."

Cameras make these decisions on the basis that most scenes are comprised of equal parts of light and dark. This belief is referred to as 18% grey, however in some situations, this is not always the case.

To better explain, let's look at a common example: taking a photo of a polar bear in the snow on a bright sunny day. You are seeking the ability to reproduce the bright scene you viewed with your own eyes. However, most likely the bear and the snow will appear to be a dirty grey. The reason for this result is that your camera is utilizing its rule of thumb to determine shutter speed and aperture.

The reverse situation can be explained with an example of a dark photograph. Perhaps you wish to capture the magic of a dark street lit by streetlights. You are expecting a photo that is mainly dark with areas of illumination. However, because your camera is making decisions using its rule of thumb, you are more likely to have a photo that is brown in areas that should be black as well as having lighter areas that are white or overexposed.

To manage these situations, you will need to take over control of your camera. This means the camera will no longer be able to make its own decisions. One way to achieve this is to dial the 'exposure compensation' setting on your camera. A good rule of thumb to go by would be one stop forward for bright scenes and one dial back for darker scenes. An additional option is to turn your camera into manual mode. This will allow you room to play and experiment with settings as you view them in your LCD screen until you determine the exposure you are looking for.

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