AE-Lock locks in the current exposure configs, while the AF-Lock locks the focus.
FE-Lock is used exclusively for locking flash exposure options.
Information in this article applies broadly to different types of DSLR cameras.
Nikon
Consult your rig’s manual or the manufacturer’s website for further guidance.
What Is AE-Lock?
AE stands forautomatic exposure.
What Is FE-Lock?
FE stands forflash exposure.
Many DSLR cameras don’t have a dedicated FE-lock button.
Instead, the FE-Lock feature is tied together with the AE-Lock.
What Is AF-Lock?
By keeping your finger on the shutter button as you push it halfway, the focus remains locked.
Sometimes, the AE-Lock and AF-Lock share the same button, allowing you to activate both simultaneously.
AF-Lock can be useful if you want to focus on a subject on one side of an image.
