In the days of film-based photography, post processing are carried out with limited capabilities depending on the photo shop. Attributes such as brightness, contrast can be adjusted, but these shops typically set it at auto and print the shots.
With digital cameras that provides the feature of AEB, composition can be done in one shot allowing the camera to take more than a single photo with varied exposures. Typically this is done with 3 or 5 shots.
In a lower end entry level camera the AEB feature may not be available, hence the shots must be taken manually. If you remember the exposure triangle, you can adjust either the aperture or shutter speed to achieve a different level of lighting in the three shots.
Care must be taken if the camera is in Aperture or Shutter priority mode, as reducing the aperture/shutter speed may change the shutter speed or the ISO of the second and third shots. One of the easier ways to achieve this is to change the exposure levels of each of the shots. Hence, shots are better taken via a tripod.
On a medium and higher-end Digital cameras that provides the AEB, this is done automatically, one has only need to set the appropriate level of exposure for the second and successive shots. The camera will take three or five shots at a press of the shutter button.
Once these shots have been made, tone mapping can be done to achieve desired results. Tone mapping are done by means of software, altough some higher end cameras have some functionality built-in into the firmware.
The photo below shows the shot from the N8 shot with AEB at 9mpix. Post processing is done via artizen.
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| Sunset at Cape of Hope, Malaysia |
Camera: Nokia N8-00
Focal Length: 5.8mm
Aperture level: f/2.8
ISO Settings: 105
AEB Settings: Image 1: -1, Image 2: 0, Image 3: +1
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