To protect the camera lens, be sure to reattach the lens cover（）returning the camera to its case.
A: when
B: what
C: whether
D: why
A: when
B: what
C: whether
D: why
举一反三
- I bought a camera lens yesterday. Its _______ quality is excellent.
- The modern camera lens may be coated with more than ten _______ for each piece of its glass.
- The difference in depth of field produced by between 85mm lens of the medium camera and of 135 camera is ______. A: no difference B: The depth of field by 135 camera is shallower. C: The depth of field by the medium camera is shallower. D: The depth of field by 135 camera is deeper.
- We need to ______to open manual focus. A: Open the manual focus in the camera setting B: Press the MF button in the camera C: Turn the AF/MF in the lens to MF D: Turn the AF/MF in the camera body to MF
- The depth of field depends on ______. A: aperture B: the distance between camera and subject C: the size of the subject D: the focal length of the lens