前言

SD3终于在昨天开源了，这次放出了中杯。开源界已经沸腾一片了。

作为长期关注SD3进度的设计小站，这次没有赶在第一时间整理（主要还是懒~🥱）， 今天跟大家一起看看值得关注的几个点。

1. 如何使用？
2. 效果如何？
3. 生态如何？

如何使用

关于如何使用，网上已经有博主放出了很多教程。我为大家整理如下：

第一步：更新ComfyUI

ComfyUI本体已经原生支持SD3了，大家更新一下就好。更新的方法大致有两种。

使用秋叶大佬的包

只需要在版本切换到SD3后续的版本即可。

本体或portable版本

在ComfyUI目录下，右键使用终端打开，在终端中输入：

git pull 

即可更新本体。

第二步：下载模型

官方抱脸下载

官方地址：https://huggingface.co/stabilityai/stable-diffusion-3-medium

网盘下载

设计小站已经打包好了checkpoint、clip和工作流，后台回复【SD3】即可获得下载链接。

第三步：拖入官方工作流

官方提供三个工作流， 我们直接用base工作流就可以了。该流程最大的变化是加载了三个clip模型。

当然如果显存足够，也可以直接用集成了clip的sd3_medium_incl_clips_t5xxlfp16模型，这样加载方式会简单很多。 跟SDXL就很像了。

测试效果

我们测试一下SD3之前发布的特性和优势，之前我们有一篇文章专门介绍的，感兴趣可以回顾一下：# 【AI辅助设计】很能打！SD3的最新动向 下面我们分别测试以下特性：

1. 对文字的绘制。预期应该是准确的，不会像SDXL和之前的模型，文字模糊不清。
2. 对提示语的理解。预期应该是能准确理解提示语，例如位置关系，颜色，元素等。
3. 出图质量更高。如真实类图片，应该到达之前未有的高度，媲美真实拍摄。

对文字的理解

提示语：

Frontal portrait of a young disheveled woman, wearing virtual reality glasses that read the text "MATRIX", which have neon lights. With an expressionless face. in a cyberpunk image. photography by annie leivobitz, dramatic light, cinematic light 

提示语：

cyber punk neon lights of the word "LEOLEE" black background

提示语：

The word "LEOLEE" in colorful paint on white background with paint running on bottom of letters in handwriting font and easy to cut image out

文字这块SD3是完全没问题的，当然，当前只支持英文？中文不支持，或者看起来像日文。

对提示语的理解

SD3可以做到提示语指哪打哪，能很好地理解提示语的空间关系、物理关系。

提示语：

a representation of the concept of balance using geometric shapes,There are three spheres, with a red sphere at the top, a green sphere in the middle, and a blue sphere at the bottom.

Holiday beach, a husky with sunglasses, a bottle of fruit juice to his left, a white cat all the way to his right, and a bird flying overhead.

上面的图，所有元素都能够体现了，但是把左右关系搞反了。

出图质量

我们试试精细的提示语，看看SD3的出图质量。

人物肖像

an old man with a beard and glasses, in the style of realistic fantasy artwork, frantisek dvorák, beatrix potter, tony orrico, uhd image, imaginative characters, 

感觉美学风格上有所进步，但是人物细节，特别是皮肤质感，还是有种AI的油腻感。

Double exposure photograph capturing a woman awakening in bed, basked in the warm sunrise light filtering through sheer curtains, her patient smile delicately lit, clear focus on facial expression, overlapping images emphasize the gentle rays of a new day, natural light, UHD drawing, golden ratio, cinematic.

a woman holding a butterfly in front of her face, by Virginia Lee Burton, pexels contest winner, vanitas, dia de los muertos. 8 k, flowers growing out of his body, high quality fantasy stock photo, orange and yellow costume, holding a skull staff, pixar portrait 8 k photo, stock photo

人体崩坏的情况比SDXL多，还需要进一步进化。

风景

Exterior view of a modern minimalist a-frame house overlooking the Farallon islands at sunset, towering cumulus clouds, mist, metal and glass materials, glowing lights, orange and cyan and indigo colors

A mystical and vibrant nighttime scene featuring a multi-tiered waterfall surrounded by lush vegetation, with water glowing with bioluminescent light, casting a serene blue hue over the scene, exotic plants with pink and purple flowers, and the occasional flash of lightning in the background., Miki Asai Macro photography, close-up, hyper detailed, trending on artstation, sharp focus, studio photo, intricate details, highly detailed, by greg rutkowski

sunset，Alafud boats on the shore of mountain lake, autumn tranquility, beautiful lake, warm and beautiful scene, Magnificent natural landscape, stunning colors, Nature wallpapers, Colorful and bizarre landscape, Red Lake, beautiful nature, sunset autumn sunset, epic and beautiful landscapes, Immerse yourself in nature, scenery is beautiful, beautiful lake background, stunning nature in the background, The colors are bright and rich

风景无论从美术效果还是真实度，都很不错。

动物

Echoing Epochs gorgeous stunning pretty carrying polar bear cub on winter wonderland garden Create a visual narrative that intertwines elements from various historical epochs into one seamless artistic expression.

Ancient Egyptian ceremonial cat on a skateboard, very energetic, doing some radical skateboard tricks, low angle photography looking upward

Hyperrealistic oil painting of a tiny pink fluffy Asian-dressed fairy baby monkey pixie gremlin creature by Craola, seated in a hoarfrosted pumpkin-shaped teapot with cups and intricate leaves, accompanied by a Goryeo Celadon Korean Pottery close up, set on a table within a cozy room, near a window casting tender, soft pastel light on whimsical, tiny daisies, hyperrealistic

卡通动漫

A breathtaking and eye-catching futuristic illustration of a young anime woman, embodying destiny and strength. With long, flowing hair and a sword in each hand, she stands tall amidst a vibrant, picturesque field of colorful flowers. And a beautiful blue sky. The word "DESTINY" is boldly written in black, futuristic lettering at the top, while "ELITE CREATOR" is positioned below. The girl's smile and piercing eyes convey determination, while small flowers and a ribbon adorn her hair. The serene sky and vast field of blooming flowers create an atmosphere of peace and tranquility. The image is bright, vivid, and filled with vibrant colors, making it truly captivating and inspiring., vibrant

Snow White reimagined in a Moe anime-Disney fusion style, katana gripped firmly, exhibits disgust while gazing at an oversized, lustrous black apple, adorned with intricate jewelry, detailed facial expressions of eyes and mouth, complex landscape serving as the backdrop, emphasis on the character's perfect visage illuminated by strategic lighting, ambient smoke swirling, dynamic posture suggesting motion, accentuated with dramatic rim lighting, an ether, trending on artstation, sharp focus, studio photo, intricate details, highly detailed, by greg rutkowski

scared face, soft facial features, panicked, full body cyborg young girl, long white hair, silver skin, cowering, sitting in a corner, cute anime style, holding legs in front with her arms

对风格的理解很到位，但是对人体的结构绘制不太好，还需要改进。

出图技巧

提示语长度

SD3开源后，各路大佬纷纷熬夜，跑流程测试，有一些心得，我摘录如下。

提示语长度有助于提升质量

来自Thibaud Zamora ∞，他发现提示语越长，出图质量越好。

采样设置

来自Photogenic Weekend，他说，使用这个设置，人体的出图会好一点。

但依然避免不了人体崩坏的情况，期待进化吧。

好了，今天的SD3测试就到这里，大家可以用起来感受一下！

怎么说，这是开源的一大盛事，值得欢呼，也值得大家为赛博佛祖stability.ai 说一下谢谢！ 也期待controlnet等生态尽快完善，​开源社区继续辉煌！ 好了，今天的介绍就到这里，有什么疑问或者问题，可以留言交流哦~ 关注我公众号（设计小站）：sjxz00，获取更多AI辅助设计和设计灵感趋势。