question: What is indicated by the factor √ 2 ?
answer: there is half a stop of headroom to deal with specular reflections that would appear brighter than a 100 % reflecting white surface
turker_answer: There is half a stop of headroom to deal with specular reflections that would appear brighter than a 100 % reflecting white surface is indicated by the factor √ 2 .
rule-based: There is half a stop of headroom to deal with specular reflections that would appear brighter than a 100 % reflecting white surface is indicated by the factor √ 2 .