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PHOTOGRAPHY ▸ EXPOSURE
117
EXPOSURE LOCK
We often want to arrange important subject elements outside
the center of the image for reasons of pictorial composition and
these elements may sometimes be very bright or very dark. Cen-
ter-weighted metering and spot metering, however, mainly capture
an area in the center of the image and are calibrated to an average
gray scale value.
In that case, the exposure lock initially allows a metering of the
main subject, as well as storing of the relevant settings until the
final image section is set. The same applies for focusing (AF-L) in
any autofocus mode.
Usually both lock functions (focusing and exposure) are done at
the same time with the shutter button. Additionally, you can divide
the memory functions between the shutter button and the function
button, or assign both to a function button.
The functions include settings and storage.
AE-L (AUTO EXPOSURE LOCK)
The camera stores the exposure value. The focus can therefore be
set on another object, no matter which exposure value is selected.
AF-L (AUTO FOCUS LOCK)
The camera stores the focus setting. That makes it easier to change
the image section when focusing is fixed.
AE-L/AF-L
With this option enabled, the camera stores the exposure value and
the focus setting when the assigned button is pressed and held.
Notes
• An exposure lock doesn’t make much sense in conjunction with
multi-field metering, because a targeted capture of an individual
object element will not be possible.
• Any previously set exposure lock will be removed by a manual
setting of the aperture ring or the shutter-speed dial.
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