豪特教授解释“因为鲨鱼在水下生存并且很多都喜欢在黄昏和拂晓活动，所以他们生活在相对比较昏暗的环境中。 就如人们在夜晚利用道路反射的光线照明一样，但有一些鲨鱼在一天所有的时间内活动且他们视网膜比一些夜间出没的肉食动物和深水动物拥有更多的视锥细胞和少量的棒形细胞”。
Dr Hart explained that, because sharks live underwater and many are most active at dawn and dusk, they are operating in relatively dim light.
动物在中午的时候活动较少，所以你如果不想拍摄睡觉的动物，就要利用清晨或傍晚的时间，这时的光线也是最理想的。
Animals are least active in the middle of the day, so if you want to avoid shots of them sleeping, head out in the early morning or late in the afternoon when the light is also at its best.
获得在四川大山中自由活动许可的著名野生动物摄影师史蒂夫·布鲁在中国的卧龙国家级自然保护区里花了一周时间在大熊猫中穿梭。
Famed wildlife photographer Steve Bloom spent a week in China's Wolong National Nature Reserve, moving among the pandas, who get to roam free near the Sichuan mountains.
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