People have been inquiring about where to get the SMPTE RP166-1995 document mentioned above. This technical reference is available from the Society Motion Picture and Television Engineers directly at:
http://www.smpte.org/standards/NumberIndex_3_07.pdf .
Half the cost can be saved by getting the Widescreen Review back issue of their special edition titled, 'Imaging Science Theatre 2000' from 1998, which includes a reprint of the document:
http://cinemaquestinc.com/isf-mag.htm . This special edition also includes much more detail about display viewing environment conditions and imaging science principles. It should be in the library of anyone serious about ultimate video quality and video displays.