光学变焦英文名称为Optical Zoom，数码摄像机依靠光学镜头结构来实现变焦。数码摄像机的光学变焦方式与传统35mm相机差不多，就是通过镜片移动来放大与缩小需要拍摄的景物，光学变焦倍数越大，能拍摄的景物就越远。
不过这款口袋摄像机不具备光学变焦功能，只支持4倍数码变焦。另外产品还内置了电子防抖功能。
While there is no optical zoom, a 4x digital zoom is standard. Electronic image stabilization also helps correct the traditionally shaky video common to pocket cameras.
VadoHD的视频规格依然只有720p，并且没有光学变焦功能，只支持两倍数字变焦，设备通过USB接口与外界连接。
The camera still shoots at 720p with a fixed optical zoom (but 2X digital) lens and attaches directly through its own USB connector.
它还具备自动昼夜转换，12倍光学变焦，4倍数码变焦和自动聚焦功能。
It offers automatic day and night functionality, 12x optical zoom, 4x digital zoom, and autofocus.
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