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Comparison of color versions (raw, natural, white balance) of Mount Sharp (Aeolis Mons) on Mars A white-balanced image of Mount Sharp (Aeolis Mons) on Mars. Most digital cameras have means to select color correction based on the type of scene lighting, using either manual lighting selection, automatic white balance, or custom white balance. [6]
Many digital cameras have a custom white balance feature. A photo of the gray card is taken and used to set white balance for a sequence of photos. For post-processing white balance, a photo of the gray card in the scene is taken, and the image processing software uses the data from the pixels in the gray card area of the photo to set the white ...
This feature of the visual system is called chromatic adaptation, or color constancy; when the correction occurs in a camera it is referred to as white balance. Though the human visual system generally does maintain constant perceived color under different lighting, there are situations where the relative brightness of two different stimuli ...
The Olympus E-500 (Olympus EVOLT E-500 in North America) is an 8-megapixel digital SLR camera manufactured by Olympus of Japan and based on the Four Thirds System. It was announced on 26 September 2005. Like the E-300 launched the previous year, it uses a Full Frame Transfer (17.3 x 13 mm) Kodak KAF-8300CE CCD imaging chip.
In film cameras, no electronic or digital manipulation of white balance is possible in the original camera negative. Color-correction filters are an effective method of adjusting white balance. Without filtering, one must attempt to fix white balance through color timing or by manipulating the film after it has been scanned or telecined.
White balance bracketing [ edit ] When shooting in a camera's raw format (if supported), white balance can be arbitrarily changed in postprocessing as well, so white balance bracketing is particularly useful for reviewing different white balance settings in the field.
Film typically assumes using separate films to account for white balance of scene (typically in two variants: for sunlight or tungsten lamps), or usage of filters. Many film cameras had a dial to help user keep track of type of film that was loaded in the camera.
Nearly all digital cameras can process the image from the sensor into a JPEG file using settings for white balance, color saturation, contrast, and sharpness that are either selected automatically or entered by the photographer before taking the picture. Cameras that produce raw files save these settings in the file, but defer the processing.