SIGMA SD1 - Manual (Page 73)

72
SPOT METERING
The camera will measure the brightness of only the
Spot Metering Circle.
AE LOCK
The camera will fix and memorize the exposure value whilst the “AE” Lock
button is depressed. When you wish to lock the exposure of a subject
off-center, AE lock is very useful. Use of this function with Spot Metering
Mode is recommended.
1
Center the subject inside the viewfinder, then
press the shutter button halfway.
2
Keep shutter button halfway depressed, and
then push the
button. (While operating
the AE lock, the displays of the shutter speed
and aperture value in the viewfinder are
locked and “AEL” is visible). You can release
the shutter button.
3
Hold the button while you compose the
picture. Then press the shutter button to take
the picture.