Since X-Rite has discontinued the mini color checker, many new imaging projects are relying on the Micro Nano Color Checker from Image Science Associates.
Here is how you can optimize your exposure in Adobe Lightroom using the Tone Curve tool based on target values of the Micro Nano Color Checker. Thanks to Bruce Lindbloom for publishing the recommended values.
Here is how you can optimize your exposure in Adobe Lightroom using the Tone Curve tool based on target values of the Micro Nano Color Checker. Thanks to Bruce Lindbloom for publishing the recommended values.
Start with a well exposed image (the whitest square should read about 247RGB or 97%)
Open an image with the color checker in Lightroom's Develop module.
Under Tone Curve, select "Linear" from the menu.
Magnify the image to 1:1.
Position the color checker in the center of the frame using the Navigator.
Click on the Tone Curve adjustment tool to select it.
Position the tool over the third gray square from the right.
Click and drag the mouse down until the RGB values read about 50%.
Position the tool over the left-most dark square.
Click and drag the mouse down until the RGB values read about 29%.
Your resulting curve will look similar to this.
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