SIGMA DP1 - Manual (Page 58)

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SELECTING THE METERING MODE
The camera has three advanced metering
modes.
1
Press the button to open [ Shooting Menu].
2
Use the buttons to select [Metering Mode] and press the button.
3
Select the desired mode by using the buttons.
4
Press the button or the button to apply the settings or the
button to close the sub-menu without making any changes.
x Selected metering mode is displayed in the lower right on the color LCD
monitor.
EVALUATIVE METERING
The camera measures the brightness of the scene by independently measuring
each segment of the focusing screen and analyzing the correct exposure for the
main subject under any lighting situation.
Even under strong back lighting or complex lighting situations, the camera will
give you the correct exposure.
CENTER WEIGHTED AVERAGE METERING
The camera will measure the average brightness of the entire scene with
additional emphasis on the center area. It will determine the most suitable
exposure with respect to lighting conditions.
SPOT METERING
The camera will measure the brightness only inside of the center focusing point
on the color LCD monitor. This mode is suitable when you wish to set exposure
for a portion of the scene and ignore the influence of rest of the scene.