This is a simple kohya extract (256 dim and 64 dim for the Lite version) of the 1.5 model trained with offset noise by Cross Lab and should work well with most 1.5 based models.
Applying this lora will help you generate more realistic exposure for your generations, especially in pretty contrasty scenarios, where the original 1.5 would have tried to create a boring even exposure or overexposed/over saturated results to compensate the dark parts. Note that it will probably change composition
Instructions :
Placing it at the start of the prompt seems to help
It's fairly strong, you can dial it back if need be
I recommend using dark themed prompts of course