Light Matching Before Composite
Added 2026-10
Light Matching Before Composite — Chinese original prompt
把[产品]的白底图合成到[场景描述]之前，请先做光影匹配分析：1）场景主光来自哪个方向、是硬光还是柔光；2）产品图需要补哪一侧的阴影，阴影长度与柔和度；3）环境色温与产品白平衡的偏差；4）接触面的阴影与反射怎么画；5）合成后统一加的三项处理。输出可直接交给修图师的参数清单。
Site original
Chinese original
Example
Sample input
把这个保温杯的白底图合成到午后木质餐桌场景前，先做光影匹配分析。
The output should include
- 判断主光方向，以及是硬光还是柔光
- 给出补阴影与环境色温偏差
- 给接触面阴影与反射的画法
- 输出可交修图师的参数清单
Replace these placeholders 2
Swap the bracketed parts for your own details before sending.
[产品][场景描述]
How to use
先定光向再抠图，光错了边缘做得再干净也假。
Try tweaking it
- Swap style words for measurable parameters: light, lens, material, composition.
- Ask for three variants of one prompt, then compare the differences.
What you should get
- A parameter sheet you can act on (light, lens, material, framing)
- Two or three alternatives with trade-offs
Common mistakes
- Stacking words like "premium, cinematic, 8K" — no two results match.
- Asking for a real brand or celebrity look and getting something close but unusable.
How to check the output
- Parameters are executable — ready to use in a tool or hand to a designer.
- It explains the trade-offs, not just the final look.
Where it works
- Good for: breaking vague "premium feel" into concrete light, material, lens and composition parameters.
- Watch out: for real brands, celebrities or third-party work, use equivalent descriptions to avoid infringement.