【提示词教程】谁说AI画画只能NSF？用Flux.1画重曝效果

Flux大模型最近替代了SDXL跃升为话题度最高的一员。据称Flux在画面精细度和图画带文字输出上有了不少的进步，但是实测下来并非如此（有可能是我使用的工具版本问题）。

下面就来看看Flux、midjourney、SDXL 三款模型的效果吧！

本次采用的是fp8 ckpt,bnb.N4模型据悉很快就会被黑森林实验室团队弃用，目前还能下载，实测下来fp8的精度和bnb.N4差不多，前者生成速度要比后者快不少。

（prompt：A 30-year-old Asian woman. Wearing a vest top and a wine-red skirt. Having long wavy hair. Slightly lowering her head. Retaining the silhouette and outline of the person while fading the colors.The silhouette and outline of the 30-year-old Asian woman are filled with a forest/outdoor scenery: 2:2:1. The inside of the woman's body is composed of a forest/outdoor scenery. In a double exposure style with broken light and shadow. Photographic style. Double exposure. The combination of the woman's figure and the natural elements creates a captivating and surreal visual effect. The broken light and shadow add an air of mystery and enhance the artistic quality of the image.）

Flux.dev.fp8出图

（prompt：A woman around 30 years old of Asian descent. Wearing a vest top and a wine-red skirt. With long wavy hair. Slightly lowering her head. Retaining the silhouette and outline of the person while fading the colors. The silhouette and outline of the girl are filled with a bathtub/bar/scattered clothes. In a double exposure style with broken light and shadow. Photographic style. Double exposure.）

Midjourney出图

Midjourney出图

SDXL 出图

可以看出，Midjourney仍然是这三者里效果最佳的。另外，对于重曝效果来说，仅仅是加入Double exposure（重曝）是不能生成满意的图的，以下是示例————

【prompt：A girl around 10 years old. Wearing a pink striped top and a white skirt. With short hair that reaches the ears. Slightly turning her head to look at the audience. Standing in the street. Against a street background. In a double exposure style with broken light and shadow.】

Midjourney 出图

Flux.dev.fp8 出图

Flux.dev.fp8 出图

必须要将重曝的要素：人的轮廓---摄影中的第一次曝光+景/物的填充---摄影中的第二次曝光，或景的轮廓+人/物的填充。因此可以就此拓展，重曝可以按轮廓+填充的方法，来解构生成prompt，适当增加背景描写进行装饰。

以下prompt中粗体就是拆解的部分，可以看到拆解后重曝的效果Flux也尽可能地画出来了，但如果想和Midjourney一样的精美，可能需要进一步细化拆解轮廓部分的提示词，同时加权重。

【prompt：(A girl around 10 years old. Wearing a pink striped top and a white skirt. With short hair that reaches the ears. Slightly turning her head to look at the audience: Retain the silhouette and outline of the person and desaturate the colors.) The silhouette and outline of the girl are filled with a forest, which is slightly green. In a double exposure style with broken light and shadow. Photographic style, double exposure.】

Flux.dev.fp8出图

Midjourney 出图

不用挂空latent，不加lora，效果也不算太差

题图：AI

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