Datacolor SpyderCHECKR Color Chand Calibration Tool for Digital Cameras User Manual
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The SpyderCHECKR 24 Target
The SpyderCHECKR 24 is a compact but very capable version of its larger
sibling. It uses the same 24 primary patches from the right side of the
SpyderCHECKR to help you create accurate camera calibrations. The reverse
side of the target is a gray card and gray ramp. The double-sided card is
enclosed in a polymer sleeve, for compactness.