ocr: TIFF 5.0 Itis permissable 10 have a GrayResponseCurve evenj for bilevel(1- -bit) images. The GrayResponseCurve will have. 2 values. Iishould be noted, however, that TIFFI B readers are not required to pay attention to GrayResponseCurves in TIFF Bfiles. See Appendix G, Ifboth GrayResponseCurve and Phatomeridimterprelauion, fields exist in the IFD, GrayResponseCurve values override the Phadlomericinterpreation value. Buti itis a good idea to write out both, since some applications do not yer pay attention to the GrayResponseCurve Writers may wish. to purchase a Kodak Reflection Density Guide, ca ...