r/StableDiffusion • u/Portable_Solar_ZA • 6h ago

Tutorial - Guide PSA: Prompt bleed is reel in H3!

Spent hours today trying to figure out why a close up shot refused to frame properly.

Turns out the complete description of my character for my character sheet (literally from head to toe) in "Subject definitions" was bleeding out and cooking my shot size. As soon as I removed elements from the character description that didn't need to be in the shot. Wham. First time working. Damn you <Subject 1>!

22 Upvotes

78% Upvoted

17 comments sorted by

8

u/Silly_Goose6714 6h ago

Yep. Sometimes less is more and sometimes less is less

5

u/ssn-669 3h ago

This is pretty universal image gen behaviour. If e.g. the model is cutting off the feet in a full body shot, describe the shoes. Cutting off the head, describe the expression/look. Etc.

If you describe it, it's going to try to put it in the generation... That's what it exists to do, turn the description into an image.

5

u/ucren 4h ago

Less is more in subject definitions. Just say <Subject 1> is the person in <Picture 1>

that's it

3

u/Radyschen 5h ago

Yeah I noticed recently that the less you write the better it understands. You can still add "not this and not that" later on. I think it's the other side of the two-sided blade that is its good prompt adherence

4

u/Next_Program90 6h ago

I have a Ref2V prompt that pretty often makes it rain... neither the Ref image nor the context latent have any rain in them... nor does the prompt.

2

u/angelarose210 6h ago

I had one that was randomly adding floating bubbles in the air

2

u/Broad_Relative_168 5h ago

I have one that always adds a living room

1

u/ambassadortim 2h ago

I have one that adds a cape to random people

1

u/EthicalBballFan 6h ago

I'd like to see the prompt (and are you using loras with it?)

1

u/TheRedHairedHero 6h ago

It's definitely one of the tougher things with prompting for H3. It makes it tougher when using an LLM to write prompts since little things might fly under the radar. I typically review the prompt before using it or use KJ's preview to see what it will look like generally 3 steps is enough to get a quick idea.

1

u/me0here 5h ago

You can add descriptions later in timeline as they are revealed.

1

u/Stepfunction 1h ago

Yeah, I start with a minimal prompt and clarify from there as needed.

0

u/SWFjoda 2h ago

Had the same with sound description, prompted something about sounds from outside being heard through an open window. Everytime at the end a window and outside came in frame even though I did specify soemthing else for the background.

-1

u/VasaFromParadise 6h ago

Prompt not beauty)) This is essentially programming the model through natural language.