So here’s an interesting question from RickBSO about exposure compensation:

Can you please explain to me what does the exposure compensation actually do in the camera, I mean mechanically, I understand the over and under exposing, what I don’t know is if it changes the f stop, the shutter speed, the iso, etc., and if that’s the case, why can’t you just change those settings manually. Thanks

So the answer to this question actually depends on what mode you’re shooting in, and depending on that mode, your manufacturer as well. However, in the video I run down the mode dial and explain exactly what exposure compensation actually does in camera in order to make an exposure change for you.