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Subject: Re: ACR Calibration





Obviously, varying exposure adjustments were needed to arrive at these
values.





Therein lies part of the problem. The numbers WILL vary with exposure.





For example, here are the results for three different exposures from my
300D, with Exposure and Brightness adjusted to get the white patch to
around 245 and the green value in the green patch to 124.




Bruce,

To minimize variations due to exposure, wouldn't it make sense to adjust the camera exposure so that the white patch reads about 245 without any exposure adjustment in ACR?

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