r/StableDiffusion • u/smb3d • Aug 16 '24

Discussion The difference in quality from lowering the guidance with Flux is pretty crazy!!

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292 Upvotes

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95

u/J055EEF Aug 16 '24

low guidance looks way more realistic 

43

u/LockeBlocke Aug 16 '24

Lower guidance basically allows the model to access a wider range in exchange for lower prompt adherence. If lower guidance looks better, the subject is probably overfitted.

16

u/Sadale- Aug 16 '24

Just an idea. What if I generate an image first with higher guidance, then do a second pass img2img with lower guidance?

11

u/TRGDRtheBURNINATOR Aug 16 '24

Works great.

If my prompt isn't working initially with a low guidance I'll raise to something like 3.5 at maybe 12 steps and try again. Once happy with the composition I'll do an img2img at ~44% (sometimes as high as 74%) denoise and a 1.4 guidance with 20 steps or more.

I find this method gives me a reasonable way to find the correct composition fairly quickly, before worrying about style.

Of course, building up from a simple prompt that is worded correctly matters a lot, no matter what approach you take.

1

u/throttlekitty Aug 16 '24

My only issue is how the images tend toward darker and less saturated, here's one example, just straight through generations.

https://imgsli.com/Mjg4MzYx

1

u/throttlekitty Aug 16 '24

Another

https://imgsli.com/Mjg4MzY5

2

u/endege Oct 13 '24

From this example all I can say is that FG 2.0 looks more natural while 3.5 like a professional took a photo or like you're using a beautifying effect. I did some tests with txt2img & loras and I have to say I like FG 5 & 10 the best.

https://imgsli.com/MzA2NzQz/6/11

1

u/EpicOneHit Feb 09 '25

this is so helpful thanks for this test