干净背景的产品主图
提示语
Studio product photograph of [product] on a seamless [surface] background.
Keep the product from the reference unchanged in shape, label and colour.
Three-quarter view, slightly above eye level, product occupying the centre 60% of the frame.
Soft large key light from the upper left, subtle fill from the right, one soft contact shadow.
Palette: [background colour] with a single [accent colour] element.
No added text, no props overlapping the product. 1:1「keep unchanged」那一句就是把验收标准写进了提示语。点明产品占画面比例,模型才不会把它缩成场景里的一个小物件。