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When you have the Histogram palette open to monitor your tonal adjustments to an image, you may see a tiny warning symbol in the top-right corner of your histogram. That's its way of letting you know that you're looking at a histogram reading from the histogram's memory cache not a fresh reading. If you want to refresh the histogram and get a new reading (and you should), you can click directly on the tiny warning symbol and it will refresh immediately for you. |
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