The obverse projection method is limited because of protective glass and pixel of CMOS/CCD.
逆投影法颠倒镜头成像系统物和像的位置，克服了手机镜头后焦、像素等的限制。
There are obverse and adverse projection two methods for measure modulation transfer function(MTF) of lens.
镜头调制传递函数（MTF）的测量有正投影和逆投影两种方法。
There are obverse and adverse projection two methods for measure modulation transfer function(MTF) of lens.
镜头调制传递函数（MTF）的测量有正投影和逆投影两种方法。
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