One zoom lens can replace several fixedfocal-length lensed, but results are likely to be inferior.
一个变焦镜头可以代替多个固定焦矩镜头,但效果很可能比不上。
3
Zoom lens a lens whose focallength can be varied continuously over a substantial range. one zoom lens can replace several fixedfocal -length lensed but results are likely to be inferior.