记住，此时主光线就是主点光线。
远心镜头拥有与它的光轴平行的主光线，同轴照明是非常理想的。
Telecentric lens has parallel chief ray with its optical axis and is ideal for co-axial lighting.
无论妙手偶得的是人，是动物，是植物还是房屋的一角，光线始终是捕捉的主打，为此他匆忙记下天气和色彩。
Whether his inspiration was a person, an animal, plants or the corner of a room, though, light was his main prey. To help him capture it, he jotted down notes about weather and colours.
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