1.
autofocus zoom lens
自动聚焦变焦距镜头
2.
auto iris zoom lens
自动光圈变焦距镜头
3.
Lifting up her camera, she took out a zoom lens and put it on.
她举起照相机，取出一个变焦距镜头换上。
4.
manual zoom lens
(镜头)手控可变焦距透镜
5.
long focus lens
长焦距（望远）镜头
6.
variable focal length (cylindrical) lens
变焦(距)(圆柱)透镜
7.
macro teleconverter
增距式微距附加镜﹝使标准镜头变成微距而保留最近封焦距离﹞
8.
Don't forget to focus the lens.
别忘了调节镜头的焦距。
9.
the ratio of the focal length to the diameter of a (camera) lens system.
相机镜头直径焦距比。
10.
This is a long focus lens.
这是个长焦距镜头。
11.
Focal length: The distance between the centre of a lens and its principal focus.
焦距:镜头中心与其主焦点的距离。
12.
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快速变焦距手术显微镜
13.
rear-controlled zoom lens
背面调整变焦距透镜
14.
best image plane of zoom lens
变焦距物镜的最佳像面
15.
image plane displacement of zoom lens
变焦距物镜像面位移
16.
zoom stereomicroscope
快速变焦距立体显微镜
17.
back focal distance
【光】后焦距﹝指镜头与菲林间的距离﹞
18.
It has a built-in zoom lens as well.
它也有内置的变焦镜头。