改进专业产品图预设：优化场景驱动环境和商业摄影质量标准

nodes/tools/kontext_presets.py

@@ -55,7 +55,7 @@ class LoadKontextPresets_UTK:
             },
             {
                 "name": "Photo-Professional Product Photography (专业产品图)",
-                "brief": "Transform the product into a professional photography scene based on $user_prompt$, ensuring the product's shape, texture, colors, and surface details remain completely unchanged. The scene description from $user_prompt$ has the highest priority, and the environment must accurately reflect this specified context (e.g., shopping mall window display, cozy café table, outdoor park bench) rather than defaulting to a studio backdrop. Apply a commercial-grade transformation with the following principles: 1. **Scene-Driven Environment Priority**: Strictly follow the environment specified in $user_prompt$. Only use a clean studio backdrop if explicitly requested. For other contexts, create a professional setting that matches the scene while maintaining commercial photography quality and visual clarity. 2. **Professional Lighting & Shadow Control**: Use lighting setups that match the requested environment (e.g., mall ambient lighting with soft reflections, natural sunlight for outdoor, warm interior lighting for lifestyle). Adjust shadows and highlights to enhance the product while ensuring the lighting feels authentic to the scene. 3. **Composition & Focus Excellence**: Frame the product using professional photography principles (e.g., rule of thirds, depth of field, natural foreground/background integration), keeping the product as the clear focal point. 4. **High-Quality Standards**: Ensure sharp focus, correct exposure, and professional color grading that enhances the product's design and integrates seamlessly with the scene's tone. 5. **Seamless Context Integration**: The product must appear naturally placed in the requested scene (e.g., within a shop display or lifestyle surface), with consistent reflections, shadows, and scale. 6. **Brand-Ready Presentation**: Final output must meet e-commerce and marketing standards, suitable for online catalogs, ads, or promotional images. Describe the exact scene setup, including camera angle, background elements, lighting style, and composition, ensuring it matches $user_prompt$ and avoids default studio interpretations unless explicitly mentioned.",
+                "brief": "Create a professional product photography scene strictly based on $user_prompt$, ensuring the product's shape, texture, colors, reflections, and surface details remain unchanged. The specified scene in $user_prompt$ is the highest priority and must be accurately represented — avoid default white or studio backgrounds unless explicitly mentioned. Apply a commercial-grade transformation with the following principles: 1. **Scene-Driven Environment**: Always render the environment exactly as described in $user_prompt$ (e.g., shopping mall display, outdoor park, urban street, café table). Do not default to minimal studio setups unless explicitly requested. 2. **Authentic Lighting & Shadows**: Match lighting style to the scene context (e.g., natural sunlight with soft shadows for outdoor settings, ambient mall lighting with mild reflections, warm tones for indoor settings). Keep shadows and highlights consistent with the product's placement. 3. **Professional Composition**: Use framing techniques such as rule of thirds, leading lines, and controlled depth of field. The product must remain the main subject while being naturally integrated with foreground and background elements described in $user_prompt$. 4. **Environmental Realism**: Blend the product seamlessly into the environment with matching perspective, scale, and surface reflections. The surroundings (e.g., floor, textures, props) must look natural and context-aware. 5. **Marketing-Grade Quality**: Maintain sharp focus on the product, with clean and professional color grading that complements both the product and its environment. Avoid any overly flat, artificial, or unprofessional look. 6. **Scene-Specific Detailing**: Include relevant background or prop elements that enhance realism and match $user_prompt$, but never distract from the product as the visual focal point. Final output must resemble a professional product shoot that fits the scene described in $user_prompt$, with no fallback to plain studio or white backgrounds unless explicitly required.",
             },
             {
                 "name": "Photo-Product Lifestyle Scene (产品生活场景图)",