对于全画幅的数字单反相机来说，镜头的焦距在16mm以下的镜头称为鱼眼镜头。( )
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拍摄人物特写时，需要突出主要人物的表情、细节，让背景虚化则需要使用大光圈，长焦距镜头。( )
A. 对
B. 错
58（）
A. What should I do
B. Thank you,mom
C. Where have you been
D. Yes, he is
E. What was wrong with him
F. Were you sick
G. Where is the hospital
H. I’ m sorry to hear that
数字相机传感器的主要作用是将从镜头中透过的光的影像转换成模拟的电信号。( )
A. 对
B. 错
26()
A. how
B. why
C. when
D. what
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