这张图的透明伞核心不是“有一把透明伞”，而是“镜头从伞外...

这张图的透明伞核心不是“有一把透明伞”，而是“镜头从伞外上方俯拍，透过透明PVC伞面看见伞下人物”。所以提示词里要把伞当成画面的第一层，而不是道具。正确顺序应该是先写镜头位置，再写伞面材质，再写伞骨结构，再写水滴光学，最后才写人物和环境。 偏通用、稳定、适合生图： 一张竖版雨天手机照片，高角度俯拍视角，镜头贴近一把透明PVC长柄雨伞的外侧上方，透明伞盖占据画面上半部分和四周边缘，伞面在镜头与人物之间形成清晰的透明前景层。伞面不是完全隐形，而是带轻微青蓝灰色透光感的透明塑料薄膜，有真实的弧形伞面、边缘压线、轻微折射和反光。黑色伞骨从右上方伞心向四周放射，多条细伞骨、中央伞杆、斜向支撑杆清楚可见，形成明显的几何放射结构。伞面外侧覆盖大量大小不同的雨滴，雨滴必须贴附在透明伞面上，有近处大水珠、远处小水珠、白色高光点、轻微景深虚化和局部折射，不是空气中漂浮的雨点，也不是镜头污渍。人物站在伞下抬头看向镜头，脸部透过透明伞面和雨滴仍然清楚可见，部分发丝被雨天风吹起，画面有湿润、清冷、柔和的雨天气氛。背景是雨后湿沥青路面和模糊绿植，地面有反光和积水质感。整体是真实手机抓拍感，冷青蓝雨天自然光，柔和低对比，高真实度，非棚拍，非广告大片，非塑料皮，非CG感。 这个更稳： Vertical high-angle smartphone photo on a rainy day, camera placed just above and outside a clear PVC umbrella, looking down through the transparent canopy toward a person standing underneath. The transparent umbrella canopy occupies the upper half and edges of the frame as a visible foreground optical layer between the camera and the subject. The canopy is not invisible: it has a faint cool blue-gray translucent plastic tint, curved dome surface, visible rim seam, subtle refraction, glossy highlights, and realistic reflections. Black umbrella ribs radiate from the upper-right center hub across the frame, with thin spokes, central shaft, and diagonal support rods clearly visible. Many raindrops of different sizes are attached to the outside surface of the umbrella canopy, including large foreground droplets, tiny distant droplets, bright specular highlights, shallow depth-of-field blur, and slight optical distortion. The raindrops must sit on the umbrella surface, not float in the air and not appear as camera lens dirt. A person stands under the umbrella and looks upward toward the camera, face still visible through the clear canopy and raindrops, with a few wind-blown wet hair strands. Wet asphalt ground and soft greenery appear blurred through the umbrella, with rainy-day reflections. Real casual smartphone snapshot, cool blue rainy natural light, soft low contrast, authentic optical texture, no studio lighting, no CGI look. 负面提示词也要给，不然透明伞特别容易跑偏。可以这样写： opaque umbrella, solid color umbrella, fabric umbrella, black umbrella canopy, umbrella outside the frame, missing umbrella ribs, no raindrops, floating raindrops, rain only on camera lens, glass window, windshield, indoor studio, fashion photoshoot lighting, dry ground, perfect clean plastic, over-sharp CGI, fake reflections, distorted face, face hidden by umbrella, deformed umbrella spokes, extra umbrella handles, messy geometry, anime style, painting style, plastic skin, over-beauty-filtered face, same real person identity cloning
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