A Scanner Calibration Sheet is an essential accessory for ensuring accurate and consistent scans with your computer scanner. This sheet is used to calibrate the scanner's sensors and optimize its performance. By scanning the calibration sheet, the scanner can adjust its settings to accurately capture colors, tones, and details in your documents or photos. Regular calibration helps to maintain the scanner's accuracy and prevents color distortion or image quality issues. The calibration sheet is typically included with the scanner, but having additional sheets on hand is useful for periodic recalibration. With a scanner calibration sheet, you can achieve professional-quality scans with precise color reproduction and sharpness.