Sony DSLR-A700 - Manual (Page 46)

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You can fix the exposure before deciding on the composition when taking a picture. This is
effective when the metering object and focusing object are different, or when you want to
shoot continuously while keeping the same exposure value.
1 Target the subject for which you want to meter the exposure.
• Adjust the focus (you do not need to lock the focus.)
2 Press the AEL (AE lock) button.
• lights up in the viewfinder and on the LCD monitor to indicate that the exposure is locked.
3 While pressing the AEL (AE lock) button, recompose the image, if necessary, and press the
shutter button to take the picture.
• If the AEL (AE lock) button is kept down after a shot, you can continue to shoot with the same exposure
value. The setting is canceled when the button is released.
• When the flash is fired in a mode other than shutter speed priority mode or manual mode, the slow sync
shooting is performed (page 77).
z Shooting techniques
When shooting a whitish overall image such as a backlit subject or a snowy scene, the camera judges that
the subject is too bright and may set a darker exposure for the image. In such cases, adjustment of the
exposure in the + plus direction is effective.
When shooting a darker overall image, the camera judges that the subject is too dark and may set a
brighter exposure for the image. In such cases, adjustment of the exposure in the – minus direction is
effective.
Locking the exposure (AE lock)
Adjust in the + direction
Adjust in the – direction
Shutter button
AEL (AE lock) button