Posted on Mar 15, 2010 | Comments 0
In digital photography, the final result depends on many parameters. One of these parameters is the white balance.
The possibility to adjust the camera’s white balance comes in handy when the color of the light comes from an incandescence bulb or from neon and so it has a different color than natural light.
Human brain is accustomed to adjust to different colors and the human eye is naturally adapted to the variations of the light’s color which enables us to see the white paper as white even in sunlight. The digital camera uses an image processor and algorithms to adjust the overall colors of the pictures according to different light shades so that the final picture is close to what we had seen.
Settings of white balance
With the correct settings of the white balance the picture will be colored naturally, the user being able to choose between settings like: Daylight, Cloudy, Incandescent, Fluorescent and Flash.
Each setting will adjust the colors in the picture in accordance with the Sun’s light color, light color filtered by clouds, classic bulb light color, neon light color and the flash’s light color.
To have proper white balance, the digital camera should take color temperature of a light source into account. There are many options available for adjusting white balance. The most commonly used one is auto white balance which adjusts the white balance automatically up to a limited range.
The next one being the custom white balance option which allow you to adjust the white balance according to the requirements of the picture and the environment. One more technique called neutral reference can be used when auto white balance encounter problems.
Emphasizing pictures using white balance
Photographers can use the white balance setting to create more interesting photos. For example, at sunset the light has a reddish color and with the selection of fluorescent white balance setting, the image processor will amplify red in the whole picture and so the dusk will be amplified and spectacular combinations of shades and settings can create amazing effects and all remains in the hand, eye and creative mind of the person behind the lenses.
There are many white balance filters and neutral grey cards available to have accurate white balance in your digital camera regardless of the type of light conditions. Prevailing apart from all these options to adjust white balance, there are certain objects which create problems even in normal day light conditions no matter what we try.
Posted in: Performance Metrics