A zoom lens _________.
A. is faster than a regular lens.
B. is usually sharper than a non-zoom lens.
C. has a variable focal length.
D. should never be used with a filter.
Answer:C
A zoom lens _________.
A. is faster than a regular lens. B. is usually sharper than a non-zoom lens. C. has a variable focal length. D. should never be used with a filter.