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\chapter{Notes on SMPTE ST 2065-2}

The documents SMPTE ST 2065-2 Academy Printing Density (APD) -- Spectral Responsivities, Reference Measurement Device and Spectral Calculation and SMPTE ST 2065-3 Academy Density Exchange Encoding (ADX) -- Encoding Academy Printing Density (APD) Values were published prior to SMPTE ST 2065-2.  S-2008-002 served as the basis for the SMPTE documents but is now superseded by the SMPTE standards. S-2008-002, included in Appendix \ref{appendixA} of this document, is provided for historical reference. Those wishing to implement the standards should refer to the SMPTE documents, which can be obtained from SMPTE.