What should I do if I lose or damage my calibration sheet?

Although a blank, unwrinkled white sheet (A3 paper for A3 models and A4 paper for A4 models) may serve as a temporary replacement for the Plustek calibration sheet in ADF (Automatic Document Feeder) models, we strongly recommend purchasing official replacements to ensure optimal scanning results. For photo scanners such as the ePhoto Z300, we advise against using any non-Plustek products due to the sophisticated calibration requirements of photo scanning.