It consists of outer layer sealing constant temperature jacket, middle layer objective sleeve and inner layer as lens frame to partition and fix optical lens elements.

它由外层密封恒温外套、中间层镜筒、内层为分隔固定光学透镜元件的透镜框组件组成。

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Also available are a thumb grip (model TGA-1) for sure, comfortable handling as well as a lens hood (model LHP-1) and jacket case (model LCJ-RXB).

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