SD人物写真:从入门到出片的提示词全攻略
Stable Diffusion生成高质量人物写真,核心在于提示词的精细控制。本文整理了覆盖写实肖像、商业摄影、风格化角色、多人场景的提示词模板,适配SD1.5和SDXL模型。
一、提示词结构公式
【画质词】+ 【主体描述】+ 【动作/姿态】+ 【服装/配饰】+ 【场景】+ 【光照】+ 【风格词】+ 【镜头参数】
正面示例:
(masterpiece, best quality:1.2), 1girl, solo, long black hair flowing, gentle smile, looking at viewer, wearing a cream knit sweater, sitting by a sunlit window, soft morning light, (bokeh:1.1), depth of field, photorealistic, 85mm, f/1.8
二、6大场景提示词模板
1. 日系清新写真
(masterpiece, best quality:1.2), 1girl, solo, natural makeup, soft smile, looking away, (flowing dress:1.1), standing in a wheat field at golden hour, warm backlighting, lens flare, airy atmosphere, rim light, analog film, Kodak Portra 400, photorealistic, 85mm, f/2.0
2. 商业棚拍人像
(masterpiece, best quality:1.3), 1girl, solo, professional makeup, confident expression, sharp focus on eyes, wearing a tailored black blazer, studio lighting, 3-point lighting setup, clean grey background, fashion photography, commercial look, (skin texture:1.1), hyper-realistic, 100mm, f/5.6
3. 复古胶片质感
(masterpiece, best quality:1.2), 1girl, solo, 90s style makeup, neutral expression, wearing vintage denim jacket, retro Hong Kong street at night, neon lights reflecting on wet pavement, (film grain:1.1), slight chromatic aberration, analog photograph, shot on Contax T2, cinematic atmosphere, cool tones
4. 韩系氛围感
(masterpiece, best quality:1.2), 1girl, solo, (korean idol aesthetic:1.1), natural dewy makeup, gentle gaze, wearing an oversized beige cardigan, cozy cafe interior, warm ambient lighting, soft shadows, shallow depth of field, (whimsical mood:1.1), photorealistic, 50mm, f/1.4
5. 赛博朋克角色
(masterpiece, best quality:1.2), 1girl, solo, futuristic makeup, confident and fierce expression, cybernetic implants on face, neon-lit cyberpunk city, rain, volumetric lighting, (holographic reflections:1.1), blade runner 2049 aesthetic, octane render, detailed, sharp focus, 35mm, wide angle
6. 双人/多人合影
(masterpiece, best quality:1.2), 2girls, (twin sisters:1.1), one with short silver hair, one with long black hair, walking side by side, laughing together, wearing matching white dresses, cherry blossom park, spring, petals falling, soft diffused light, friendship aesthetic, candid moment, photorealistic, 35mm, f/2.8
三、常用负面提示词(Negative Prompt)
通用负面词(复制即用):
(worst quality, low quality:1.4), (bad anatomy:1.3), extra fingers, missing fingers, fused fingers, (bad hands:1.3), too many fingers, deformed hands, ugly face, distorted face, extra limbs, bad proportions, cloned face, watermark, text, signature, username, logo, blurry, jpeg artifacts, lowres, error, cropped
四、关键参数速查
| 参数 | 作用 | 推荐值(人物) |
|---|---|---|
| CFG Scale | 提示词跟随度 | 5-9(写实4-7) |
| Steps | 采样步数 | 20-30 |
| Sampler | 采样器 | DPM++ 2M Karras / Euler a |
| Resolution | 分辨率 | 512×768(竖版)/ 768×512(横版) |
| Hires Fix | 高清修复 | 开启,1.5-2x放大 |
| Denoising | 高清修复去噪 | 0.3-0.5 |
五、提升出图质量的5个关键技巧
- 权重控制用括号——(关键词:1.2)提高权重,(关键词:0.8)降低权重,括号嵌套可叠加
- 画质词永远放最前面——masterpiece, best quality, 8K等词前置能显著提升整体画质
- 镜头参数很关键——指定85mm/50mm/35mm焦段和光圈值,能大幅改变画面感觉
- 用LORA精准控脸——搭配人物面容LORA,配合触发词,出图一致性大幅提升
- 善用ControlNet——输入参考图控制姿态(OpenPose)、构图(Canny)和深度(Depth)
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