Exposure bracketing is a technique of taking several photos of the same target using different levels of exposure compensation. This technique can be used when dealing with targets with very high contrast.
With exposure bracketing you can make sure that you get the perfect exposure in very challenging lighting conditions. A typical situation where you can consider using exposure bracketing is night-time photography.
In post processing, photos that have been taken using exposure bracketing can be combined to create a high dynamic range (HDR) image.
To use the bracketing capture mode, make sure you are in the Creative shooting mode. Select the settings icon, and in Capture mode, select Bracketing. With the default settings, you get three photos with -0.7/+0.7 exposure value (EV) and no exposure compensation. This means that in the first photo, normal (0.0 EV) exposure is used. The following photos will then have -0.7 EV and +0.7 EV.
You can also change the exposure compensation base level for bracketing. For example, in the camera viewfinder, change the exposure compensation setting to -1.0. Then select the settings icon, and in Capture mode, select Bracketing with three frames and -0.7/+0.7 exposure adjustment. The photos you take with these settings will have -1.0 EV, -1.7 EV, and -0.3 EV.
If an exposure compensation value would go out of the supported range when taking a photo, that photo in the bracketing sequence will not be taken. This might be the reason in case you get fewer images than what you defined in the bracketing settings.