Excerpt from Film, Surface, and Bulky Colors and Their Intermediates
We used both black and colored fixation points. They were cut with a beveled circular punch and were slightly more than I cm. In diam. The usual exposure time in this series was 5 sec. Longer and shorter times were tried without affecting the results, except when prolonged fixation was accompanied by staring. The following instruction was given. After the usual ‘ready, Now’ signal, a colored disc and a differently colored fixation spot will be exposed. Be sure to maintain fixation at the fixation spot. Report on the character of the spot and of the colored field in terms of localization, dimensionality, texture, and objectivity.
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