When you mount a lens (whether the camera is on or off), the camera interrogates the lens for its characteristics, including maximum aperture, which one of the focusing parameters.

装上镜头后(不论相机是开着还是关闭的)，相机便会获知镜头特征，包括最大光圈，哪一组对焦参数等。

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Surface mount LED lamp. Super bright green. Lens type water clear.

表面贴装LED灯。超级明亮的绿色。镜头类型的水清除。

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This is the industry standard for broadcast cameras and it has a standard B4 lens mount.

这是广播相机行业标准，它有一个标准的三烯B4 镜头卡口。

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By using this adapter to attach any K-mount lens onto a PENTAX Q series camera, the focal length of the lens is extended by approximately 5.5 times in the 35mm format.

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Just two days later someone scaled the building and tore out the camera, its mount, lens and cable.

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The iOgrapher has a 37mm lens mount to attach wide angle, macro, and fisheye lenses.

FORBES: Connect