AEL : Auto exposure lock. With this setting the camera locks the exposure after the first picture.
BRC3: Bracket 3. With this setting the camera always takes three images for exposure bracketing. For this the Drive Mode must be set to Single Bracket 3 Image. It is just important that taking all three images doesn't take longer than the interval.
Hello,
What means AEL and BRC3 ? I searched it a lot and I couldn't found anything
Thanks for your time