A pair of picture quality experiments was conducted using ratio and ordinal scaling methodologies. The ratio scales were generated by the method of magnitude estimation and the ordinal scales were rank-ordered category scales. The purpose was to compare the methodologies, to see if one method would out perform the other. Two stimulus ranges were employed on otherwise equivalent stimulus material and observers. The ratio scale results showed much smaller context effects and have the additional virtue of providing meaningful ratios and intervals in the numerical responses.