The sensitivity controls the
A. The size of aperture
B. The time of exposure
C. The overall brightness of the photo
D. Photosensitivity of photosensitive device
From the numerical point of view, how many times the values of the two adjacent apertures differ
A. 1
B. 2
C. Root number 2
D. 4
The greater the value of f, the () actual clear aperture
A. Smaller
Bigger
C. constant
D. do not know
The larger the aperture, the shallower the depth of field
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