The difference between the actual exposure and the target exposure is known as?

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Multiple Choice

The difference between the actual exposure and the target exposure is known as?

Explanation:
The main idea is measuring how far the delivered exposure is from what you aimed for. The term used here for that difference is KSTD, which expresses the discrepancy in a standardized way so you can see both how big the difference is and whether it’s over- or underexposed. A positive KSTD means the exposure was higher than the target, a negative value means it was lower. This metric is specifically about the systematic difference from the target exposure, not random image variation. Noise describes random fluctuations in the image signal, which is not what this difference is about. So the difference between actual and target exposure is captured by KSTD.

The main idea is measuring how far the delivered exposure is from what you aimed for. The term used here for that difference is KSTD, which expresses the discrepancy in a standardized way so you can see both how big the difference is and whether it’s over- or underexposed. A positive KSTD means the exposure was higher than the target, a negative value means it was lower. This metric is specifically about the systematic difference from the target exposure, not random image variation. Noise describes random fluctuations in the image signal, which is not what this difference is about. So the difference between actual and target exposure is captured by KSTD.

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