In tribute to Hubble's longest-running optical camera, a planetary nebula has been imaged as WFPC2's final "pretty picture."

这个行星状星云的照片被看成是WFPC2最后的“漂亮图片”，以向这个哈勃历史最悠久的光学相机表示敬意。

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The present invention relates to optical camera focusing control mechanism design, belonging to optical technology field.

本发明属于光学技术领域，涉及对光学相机调焦机构的设计。

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The range of detection is one important specification for expressing the ability of detection and recognition of space-based optical camera.

探测距离是衡量空间目标天基可见光相机探测、识别能力的一项重要指标。

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The PowerShot SX260 HS camera puts Canon's amazing optical reach into a pocket sized camera, with a 20x optical zoom (25mm to 500mm) letting you pull subjects in close.

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The mirror-less camera builds on its forbears, phasing out the mirror-based optical viewfinder of the SLR camera and adding an interchangeable lens mount, while keeping the light-weight feel of the compact camera.

FORBES: New Developments for the Camera Category

With its compact design and powerful 16x optical zoom, the PowerShot SX160 IS is a versatile camera with a dynamic optical zoom range from 28mm wide up to 448mm, perfect for everyday use.

ENGADGET: Canon announces PowerShot SX500 IS, SX160 IS superzoom cameras ahead of Photokina