The lens barrel is arranged on the lens holder top part.

所述镜筒设置于镜座顶部。

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The two actuators are fixedly arranged in the lens barrel respectively.

该二个致动器分别固定设置于所述镜筒内。

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A dedicated Li-ion battery, which is built into the lens barrel, powers the zoom and autofocus.

镜头内部装有专用的锂电池，为镜头变焦和自动对焦提供电力。

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Additionally, the WG-3's category defining Digital Microscope mode and six LED lights surrounding the lens barrel enable focusing as close as one centimeter from the subject producing bright, shadow-free macro images.

ENGADGET: Pentax expands ruggedized series with Optio WG-3, Target-exclusive WG-10

The WG-3's rugged design is enhanced by its folded optical zoom lens that reduces its vulnerability to moisture and dust while ensuring a compact and pocketable size without the protrusion of a lens barrel.

ENGADGET: Pentax expands ruggedized series with Optio WG-3, Target-exclusive WG-10

Additionally, it features a macro switching ring on the lens barrel which instantly shortens the minimum focusing distance to approximately 20cm (from image plane), allowing the camera to capture small, close-up subjects with exquisite detail.

ENGADGET: Sony's Cyber-shot RX1 compact camera packs a full-frame sensor, 'fits in your palm' (hands-on)