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AE lock allows you to set the exposure for a part of the image that you
want to be correctly exposed, and then lock in that exposure setting
when you take the picture. This technique is useful when you want to
store an exposure setting in the camera (by pressing the “AE-L” AE
lock button) and then keep the same exposure setting as you change
your subject’s pose or the composition of the shot. Regardless of the
selected exposure mode, the exposure metering mode is automatically
switched to center-weighted metering.
1
Position your subject in the center of the image, hold
the shutter button halfway and press the “AE-L” AE
lock button.
2
With the “AE-L” button held down, return to the shot
composition you want to photograph, focus the shot
and then take the picture.
AE Lock Photography
