Do correct me if I am wrong as I am just a little past the newbie stage.
Topic #1: Exposure bracketing and Auto-Exposure-Bracketing (AEB)
What is it?
It is taking a series of photographs of the same composition at selected (arbitrary) exposure settings relative to what is considered "correct exposure".
Less technically speaking, it is taking a series of photographs of the same composition at different brightness intervals, and the interval may be determined by the shooter.
How does it work?
(I am not sure about other brands hence I can only explain from a canon user point of view)
The camera will do metering for you in Av/Tv/P modes. The camera will take (automatically) , a darker, brighter and normal exposure frames, if you turn on Exposure Bracketing (although you will have to shoot each frame manually if "Auto Exposure Bracketing" is not used). The difference will be explained later.
How can I get it to work?
You will need
(a) a camera with Exposure Bracketing / Auto Exposure Bracketing capability
(b) (optional) your camera manual which will tell you the most effective way to access this .
1. Press menu button. Seek out the icon for shooting settings. Look for the Exposure Comp/AEB. select it.
Using the main dial (or the appropriate control), "spread" the bracketing points away from the center eg i | i . how far away they brackets are spread will be the exposure intervals (ie, how much difference in brightness or darkness) .
Press 'set' or "enter" or equivalent.
You may now start shooting in Exposure Bracketing mode but each 3-photo series must be triggered manually and bear in mind that until each 3-frames series is "complete" the exposure for the next composition might not be what you are expecting. (meaning the bracketing might be messed up unless you count dilligently)
2. Auto-Exposure Bracketing
Set your shooting mode (or drive train) to Auto. The camera will now "burst" in 3-frames series to finish each 3-frame bracketing. This is more useful, especially at places where the shooter might be concerned that exposure is tricky and may not be accurate and the movement may be fast (eg weddings)
(Optional: The shooter may also "shift" the center point of reference exposure compensation to shoot brackets set-off from the "correct" center point of exposure )
1. High Dynamic Range photography (easier for static scenes) - to shoot 3 (or more!) images with different exposures and merging them with a 3rd party software
2. Fast action scene where exposure must die die be correct (eg weddings!) - very convenient (caveat: i am not a professsional nor claim to be one. this is just my experience from attending weddings. )
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Seniors, and sempais please do correct me where I am wrong, I will make amendments where incorrect and where necessary .