Minolta Dynax 7xi, Instruction Manual, Page: 60 / 103

To lock the exposure system independently of the autofocus system,
position your subject in the viewfinder and press the AE lock button; AEL
will appear in the viewfinder data panel. Hold the button in as you
recompose and take the picture.
• If you release the AE lock button before you take the picture, the
exposure system will re-evaluate the scene and continue functioning as
normal.
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AE LOCK