question: A lens with a setting of f/1 .4 lets how much to hit the focal plane compared with a setting of f/2 ?
answer: twice as much
turker_answer: A lens with a setting of f/1 .4 lets twice as much hit the focal plane compared with a setting of f/2 .
rule-based: A lens with a setting of f/1 .4 lets twice as much to hit the focal plane compared with a setting of f/2 .