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This model is specially fine-tuned to create good shadowy, dark, scenes. It's created by Nicholas Guttenberg at Crosslabs and the concept is explained here.
Nicholas explains: "not only does SD not have the ability to produce overly dark or light images out of the box, but it also can’t even learn to do it - not without changing one thing about it"
The article goes on to explain how to finetune your own models with their "darkness" technique, or you can merge the attached file into your own models with a SD 1.5 diff.
The attached images showcase the difference between their Noise Offset trained 1.5 model and the original 1.5 model, and the results are striking - true darkness and good contrast is possible with this model/method. I've also included examples of the model merged into my Churned Mix - producing true black/dark images.
This amazing LoRA has implemented the technique described in Crosslab's paper.
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发表于 2023-6-7 22:08:20