Exposure Lock (AE-L Button) is the abbreviation stands for Automatic Exposure Lock. It is useful using automatic and semi-automatic shooting modes. Where has this information been all my photographing life? So freaking helpful it's not even funny.
My online guide, full of personal insights and experiences with the Nikon organized into an easy-to-understand resource packed with tips, tricks and recommended settings. Oh this the exact camera I have and need to learn how to use!