Context: The Standard Output Sensitivity (SOS) technique, also new in the 2006 version of the standard, effectively specifies that the average level in the sRGB image must be 18% gray plus or minus 1/3 stop when the exposure is controlled by an automatic exposure control system calibrated per ISO 2721 and set to the EI with no exposure compensation. Because the output level is measured in the sRGB output from the camera, it is only applicable to sRGB images—typically JPEG—and not to output files in raw image format. It is not applicable when multi-zone metering is used.

Question: What year was the Standard Output Sensitivity technique introduced?
Answer: 2006

Question: What does the Standard Output Sensitivity technique apply to?
Answer: sRGB images—typically JPEG

Question: What is the output level measured in?
Answer: the sRGB output from the camera

Question: With what type of metering can the Standard Output Sensitivity not be used?
Answer: multi-zone metering

Question: With what standard is the automatic exposure control system calibrated?
Answer: ISO 2721

Question: What technique was removed in the 2006 standards?
Answer: Unanswerable

Question: When exposure is not automatically controlled, what is the gray set at?
Answer: Unanswerable

Question: How are files in raw measured?
Answer: Unanswerable

Question: Multi-zone metering uses what ISO calibration?
Answer: Unanswerable

Question: When was the SOS technique applied to raw images?
Answer: Unanswerable