第一点就是被一些专业人士所熟知的“裁切系数”(crop factor，也称镜头焦距转换率)。
你站得离镜头太近了，能离远一点吗？
You're standing too near the camera. Can you more a bit farther?
我需要个好一点的镜头。
镜头有正常使用所造成的划伤、磨损和一点掉漆。
The lens has scratches, scuffs, and a little bit of paint loss from typical use.
镜头有正常使用所造成的划伤、磨损和一点掉漆。
The lens has scratches, scuffs, and a little bit of paint loss from typical use.
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