optical zoom on 光学放大
extra optical zoom 超级光学变焦
Optical zoom lens 光学变倍镜头
optical zoom ratio 光学变焦比率
Optical zoom in 光学放大
5x optical zoom 倍光学变焦镜头
Optical zoom rate 光学变焦比
x optical zoom 倍光学变焦镜头
Also, concentrate on optical zoom, not digital zoom, which degrades image quality.
另外还要注意光学变焦,而不是数码变焦,数码变焦会降低画面质量。
As for buttons, there is a shutter release, a slider for an 8x optical zoom and a power button.
机身按钮包括一个快门键、一个8倍光学变焦滑钮和一个电源键。
The Pentax Optio NB1000 is a 14.1 megapixel camera with 4x optical Zoom and 720p video recording.
宾得Optio NB 1000相机配备1400万像素摄像头,4倍光学变焦,具备720p视频拍摄能力。
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