Nidelva river through Trondheim Norway

Nidelva river through Trondheim Norway
by Saaru Lindestokke                

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1
vote
3answers
11k views

What does the AE lock button do that half-pressing the shutter doesn't?

The Sony A6000 has an AEL button, while Nikon SLRs have an AE/AF lock button. What do these do that half-pressing the shutter to lock focus and exposure, and then recomposing, doesn't? I'm used to the ...
3
votes
3answers
183 views

What is AF-L needed for? [duplicate]

After quite a lot of reading even, I am not being able to grasp the rationale behind the AF-L part of AE-L/AF-L button on Nikon D5300. If the camera is set to AF-C, then the concept of locking focus ...