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Reference—Exposure
Autoexposure Lock
When center-weighted metering is used, an area in the center of the frame is
assigned the greatest weight when determining exposure. Similarly, when spot
metering is used, exposure is based upon lighting conditions in the selected fo-
cus area. If the subject is not in the metered area when the picture is taken,
exposure will be based on lighting conditions in the back ground, and the main
sub ject may be under- or over-exposed. To prevent this, use autoexposure lock:
1
Select exposure mode P, S, or A and choose cen-
ter-weight ed or spot metering (exposure lock
has no eff ect in exposure mode M). If us ing cen-
ter-weight ed me ter ing, select the cen ter focus
area with the multi selector ( 53).
2
Position the sub ject in the selected focus area and press the shutter-re-
lease button halfway. With the shut ter-release button pressed halfway and
the subject po si tioned in the fo cus area, press the AE-L/AF-L button to lock
exposure (and focus, except in man u al focus mode). Confi rm that the in-
focus in di ca tor (●) appears in the viewfi nder.
While ex po sure lock is in eff ect, an AE-L in di ca tor will ap pear in the view-
fi nder.
3
Keeping the AE-L/AF-L but ton pressed, re com -
pose the pho to graph and shoot.
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