视频展示了一双手正在操作一台Mamiya M645 Super相机。开始时，双手握着相机，然后左手转动相机底部的一个旋钮，打开了相机的后盖。接着，左手从相机中取出一个装有胶片的暗盒，将其展示给镜头。背景是一个黑色的平面，旁边有一个Mamiya品牌的镜头盖。整个过程动作流畅，展示了更换胶片的操作步骤。
The video shows a person handling a Mamiya M645 Super medium format camera. The individual is seen opening the back of the camera, revealing the film compartment. They then proceed to remove a film holder from the camera. The background is a dark surface, and there is a lens cap with "Mamiya" written on it placed nearby. The actions are performed carefully and methodically, suggesting familiarity with the camera's operation.
A person holds a black camera with both hands, rotating it to reveal the front and side. The camera model 'M645 Super' is visible on the side. The person uses their right hand to press a button and then pulls out a film cartridge from the camera. The film cartridge is partially ejected, revealing its surface.