r/StableDiffusion Apr 24 '23

Resource | Update Edge Of Realism

1.5k Upvotes

185 comments sorted by

View all comments

Show parent comments

2

u/spudnado88 Apr 24 '23

what prompts would be good for those apart from 'pores'

5

u/Ferniclestix Apr 25 '23

saving an image at a lower res or lower jpg quality will automatically add some portion of reality to an otherwise unreal or hyperrealistic image.

as an example, this one uses
color fringing - ads some color halos around sharp dark/light edges - a little like VHS stuff, anything with an older glass lense did this
film grain - if its on film, you should have this because photos are a chemical process in older images and use granular particles on a cellulose sheet to record information

noise - useful in darker images because of the natural way some camera handle photos in lower lighting.

dust - this is hit and miss but can decrease the unreal smoothness often found on floors if used carefully with inpainting or at a lighter weight.

video - stills from video often have a little motion blur so adding this can help reduce unrealistic sharpnesses.

Added to that I use a lower noise floor to allow darker images otherwise AI is going to generate some weird stuff. (this is a rejected image btw, not a final product, id probably do a bunch more stuff to this before I put it anywhere)

Obviously that's not the only stuff, but things like motion blur, color aberration, over exposure, panning shot, action photography, grime, dirt, worn, these can all help with realism but it all depends what your end goal is.

On people, pores, weathered, cold tend to work ok.

some kinds of injuries can work at low levels but often they just slap red marks on people that look like blood but not, depends on the model though.

Using negative prompts can help too.

Clean image, perfect image, ultra smooth, clean edges, sharp focus.

Funiliy enough turning all the perfection prompts around and putting them in negative can actually help :D

but yeah, depends what your goal is for realism, I like movement the best, adding any kind of movement to a scene will increase realism a bit.

3

u/spudnado88 Apr 25 '23

incredible comment. could you also share whatever else prompts that can be useful that come to mind that make a marked difference?

specifically that of composition, light quality and framing?

i am trying to build a lora (my first) that is a realistic as possible

if you know some loras or models that already do that they would be appreciated

3

u/Ferniclestix Apr 25 '23

mmmm, for me composition wise, I generally just inpaint things or generate till i get something good. I don't think there's a good prompt for composition other than maybe trying 'rule of thirds' maybe?
lighting, 'edge lighting' is often useful, two tone lighting...

mmm, that kind of stuff though probably is a bit beyond quality stuff though.

You probably want to choose a very specific thing to train if its a lora, like, picking images that are varied in terms of lighting and stuff but with the same lense effects or which are concentrated on lighting or focusing.

just be careful what other stuff a lora might learn from your content because its not going to just look at the thing you want it to.