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Old Jan 4, 2006, 3:24 PM   #1
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So what happens when you centerweight meter a subject and vastly different tones appear in the weighted area of the frame? How does the camere decide what tone to expose as "medium".
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Old Jan 4, 2006, 3:41 PM   #2
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it does not decide, it merely takes an average reading

the PHOTOGRAPHER decides - try metered manual mode
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Old Jan 4, 2006, 5:15 PM   #3
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Not sure about digital caneras, but on film cameras there usually was a large circle in the center of the viewfinder. When using center weighted metering, the camera would give about 80% to the circle and 20% to the rest of the frame.

Spot metering would be a small spot in the center of the viewfinder that would get 100% of the metering, while Averaged metering would take the entire frame and simply average the exposure.

But at no time did the camera decide. It simply used one of the above methods, previously selected by the user.

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