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。

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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。

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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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The high-end Schneider lens offers a 24mm, ultra-wide focal length and 3x optical zoom.

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The Olympus Stylus 730, a 7.1 megapixel model with 3x optical zoom, a 3-inch LCD.

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The 28mm wide-angle lens with 5x optical zoom aids in capturing great shots from a distance.

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