SDXL 1.0 Base Without/With DPO LoRA
Observed subjectively positive effects:
Reduced likelihood of incoherent subjects. Almost all base images exhibit something that doesn't make sense; hallucinated people (1), incorrect perspective (2, 4), or otherwise awkward body placements (3, 6)
Overall more visually appealing arrangement of subjects.
Observed subjectively negative/neutral effects:
Increased contrast, with some "dreaminess" or focal blur/bokeh.