本题目来源于试卷: Optical Instruments，类别为 IB物理学
[问答题]
Why is the depth of field greater,8lvwnh;n 5il*t tc,j3 and i, s ahgnglb3 ;unsyxg4+(n26the image sharper, when a camera lens is “stopped down” to a la 4h,( xuya+n3 2sg;6gns gnblirger f-number? Ignore diffraction.
参考答案:
Stopping down a lens to a
larger f-number means that the lens opening is smaller and only light rays
coming through the central part of the lens are accepted. These rays form smaller circles of confusion,
which means a greater range of object distances will be more sharply focused.
本题详细解析:
暂无
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