视频展示了一只手正在操作一个黑色的相机镜头。镜头放置在深色的桌面上，镜头上有一些白色的数字和字母标识。手先是轻轻旋转镜头前端的对焦环，然后将镜头翻转，继续调整对焦环。整个过程中，镜头的细节和手的动作都被清晰地捕捉到。背景简洁，突出了镜头和手的操作。
The video shows a close-up of a person's hand interacting with a camera lens. The lens is black and appears to be a high-quality, professional-grade piece of equipment. The hand is seen adjusting the focus ring on the lens, turning it back and forth. The background is a plain, dark surface, which helps to highlight the details of the lens and the hand's movements. The overall scene suggests that the person might be demonstrating how to use the lens or preparing it for photography.
A hand is holding a black camera lens with the model 'FE 2.8/16-35 GM' on a dark surface. The hand begins to rotate the lens slightly to the right. The hand continues to rotate the lens, moving it further to the right. The hand then starts to grip the lens more firmly. The hand firmly holds the lens in place, ensuring it is stable.