AE-Lock and AF- lock in Nikon D40

[dalat_1960]

I don't know when we should use the AE-L button.
Can anyone give me some idea and some sample photos please.
Thanks a lot.
Nguyen.

 

[Suvv]

I use the button to lock exposure, it stays locked until I press it again.
I use the shutter button to lock focus.
This means that I can lock either or both when recomposing a shot.

 

[mrgas]

I use the button to lock exposure, it stays locked until I press it again.
I use the shutter button to lock focus.
This means that I can lock either or both when recomposing a shot.

mine switches itself off after a few seconds of inactivity , very annoying

 

[Suvv]

mine switches itself off after a few seconds of inactivity , very annoying

On the D40 you can set Custom Setting Menu 15 - Auto off timers.
I select that then select Custom and change Auto Meter off to 1 min.

Not sure about the D60 though.