机芯微距细节特写

生成一张 4:5 竖版「机芯微距细节特写」案例图，所属分类为「产品摄影」。单色机械表微距，表盘与透底机芯并现，擒纵轮清晰对焦，黑色绒面布衬底。画面需要完整呈现上述主体、构图、配色、材质、光线和整体风格；可见文字以自然简体中文为主，必要的技术缩写、代码、变量名、学术符号、单位、拉丁物种名或装饰性外文可保留。

A monochrome macro product photograph of an open-caseback mechanical watch laid dial-up on a black velvet pad, showing both the dial face and the partially visible movement through a see-through caseback. Shot with a 100mm macro lens at f/4, focused precisely on the escapement wheel teeth. Ring light illumination provides an even base with a subtle catch-light ring visible in the sapphire crystal. A second directional hairlight from upper-left picks out the polished bevels of the movement bridges. The watch case is stainless steel; the dial has applied hour markers and a small seconds subdial at 6 o'clock. Gear teeth and jewel ruby bearings are rendered with crystalline clarity. Color palette: silver steel, matte black, deep shadow. Mood: precision, horological obsession, quietly austere.