For those of you who use Nikon D3/D4/D3S/D7000 cameras and similar:
a. Press the bracketing button (BKT) on the left side of the top of the lens
Source: http://belfot.com
b. Turn the command dial (rotary wheel on the top right rear of the camera) until the screen shows 3F which means 3 photos with different exposures in one bracketing process.
c. You can choose to use single frame or continuous shooting type. If you choose single frame, then you need to press the shutter button three times for each exposure. Meanwhile, if you use continuous shoot mode, you can press and hold the shutter so that the camera will simultaneously take 3 exposure photos.
For those of you who use other types of Nikon cameras such as the D300/D300S/D700, you can use the Fn button on the bottom right of the lens, turn the rear command dial wheel to determine the number of frames you want to take, and turn the front command dial to determine the exposure range.
2. For those of you who use a Canon EOS 60D/50D/7D camera:
a. Go to the menu, shooting 2, see the first entry: Expo.Comp./AEB, click on the menu
b. Turn the main dial (wheel on the top right) to select the bracketing range
c. Press the SET button
For Canon 600D camera:
a. You can press the “[Q]” button
b. Swipe with the navigation button until you are on the light meter box, press the SET button
c. Use the main dial wheel to set the exposure distance, for example (+) 1 stop and (-) 1 stop, press the SET button