“他用他的摄影机来设计，”斯魁尔说，“在以一名软焦距摄影师的身份开始工作后，他经受住了人们的关注并对这项领域产生巨大的影响。”
"He was designing with his camera," Squiers says, "and after starting out as a [soft-focus] pictorialist, he brought sharp focus to bear and had a tremendous effect on the field."
这种相机不仅能拍摄出更加栩栩如生的照片，更为重要的是，它允许用户在拍照后对照片焦距进行调整。
That makes for more vibrant photos, but most importantly, it allows users to change the focus within an image after it's been taken.
实验测量了经单一锗透镜聚焦后的CO_2激光束的腰斑半径和位置，同时确定了聚焦锗透镜的焦距，其结果与实际情况一致。
The radius and position of waist spot of CO2 laser beam focused by a single Ge lens were measured experimentally, and the focal length of the Ge lens was determined. The result is in agreement w...
一旦装上它后，只要将镜头转到普通的最近对焦距离处，就可获得更近的对焦。
Once mounted, the closer focusing range is attained by turning the lens to it's closest normal focusing point.
之后，通过合理控制前固定组球差及后固定组焦距，使变焦过程中的像面保持稳定。
Then, image surface position was kept steady during a zooming process by controlling the spherical aberration of front fixed group and the focal length of back fixed group.
一旦装上它后，只要将镜头转到普通的最近对焦距离处，就可获得更近的对焦。
When focused near it's closest regular focusing distance, the lens will be difficult to mount OR unmount.
一旦装上它后，只要将镜头转到普通的最近对焦距离处，就可获得更近的对焦。
When focused near it's closest regular focusing distance, the lens will be difficult to mount OR unmount.
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