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ISO: Press and hold the Fn button (page 19) while turning the rear dial, slowly. You'll cycle
through all the ISO Settings. (page 25) . An added nicety lacking on more expensive Nikons is that
you have full ability to go to and from ISO 3,200 (HI 1) without needing to turn off Auto ISO (page
30).
WB: I use this option, since I change my WB more often than any of the other options.
Press and hold the Fn button (page 19) turning the rear dial, slowly. You'll cycle through all the WB
Settings (page 24). An added nicety is that you can set a manual preset (white or gray card) white
balance by holding down the Fn button again after selecting PRE. More at my D40 WB section
(page 24).
12 AE-L/AF-L
This selects what AE-L/AF-L button (page 16) does.
AE/AF lock (default) locks both for as long as you hold the button. You'll see "EL" in the bottom
left of the finder when it's locked. There is no AF-L finder indication.
AE Lock only holds the measured exposure for as long as I hold the button. I use this setting.
You'll see "EL" in the bottom left of the finder when it's locked. I usually shoot in Single or Auto AF
mode (AF-S or AF-A) (page 27), which locks the focus separately.
AF Lock only locks the autofocus. This is handy if you want the lens to stop focusing, for
instance, if reframing a portrait or if you're panning while a target goes behind a tree. There is no
AF-L finder indication.
AE Lock Hold requires just a tap, after which the D40 holds the exposure until you tap it again.
You'll see "EL" in the bottom left of the finder when it's locked. This eliminates the need to hold the
button, but also requires you to remember to press the button again to unlock, and press a third
time to lock again.
AF ON focuses the D40 when the AE-L/AF-L button is pressed. This deactivates the normal AF
action of the shutter button. The only way to autofocus with this selection is to press the AE-L AF-L
button.
13 AE Lock
This lets you lock the exposure when the shutter is pressed.
The default is off, which I use. The shutter button doesn't lock exposure.
I prefer to use the AE-L button (page 32, above) to lock exposure.
14 Built In Flash
This lets you set the function of the excellent built-in flash.
© 2007 KenRockwell.com 32 converted by Sándor Nagy