PREFERENCE STUDY OF PEAK LUMINANCE VS. RESOLUTION FOR COLOR-TELEVISION TUBES

Subjective preference of peak luminance versus resolution was studied using a special cathode my tube (CRT) with high intrinsic resolution a s the display Various resolution steps were obtained by defocusing the electron beam, thus worsening the primary resolution. The aim was to assess the levels of preference of the common consumer; in order to le an technical CRT design efforts toward the best compromise preference/ costs, Preference ratings were collected and analyzed. Main conclusion s seem to be as follows: resolution is always welcome at a relatively close viewing distance (1.5 m) and in low ambient light. On the other hand at a larger viewing distance (3 m), there is a bias toward peak l uminance, in accordance with the elementary consideration that at larg e distance, the fine details of the picture fall beyond the resolving power of the eye.