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7/26/2025, 2:45:18 PM
>>937612105
nta but here's how it generally works: so you generally want to have your base gen resolution one of the standard sdxl sizes to avoid anatomy and composition errors, 832x1216, 1024x1024, 896x1152 whatever and then use hires fix or img2img to upscale from there.
'hires fix' is a checkbox on the main txt2img page of forge that does two things: it will first upscale (basically resize in this context) your image and then run additional sampling steps on your image at a denoising strength you specify. the denoising strength is a factor of how much to respect the original image versus ignore it. too high and you'll start getting back some of those composition errors you're trying to avoid in the first place, too low and you won't add the additional detail you're trying to get, so experiment with it a little.
important to note is the hires fix feature is literally just an automated way of img2img'ing your own gen at a higher resolution
anyway for a recommended workflow unless you're running a 5090 or something you probably don't want to automatically hires fix every picture that you gen unless the composition is simple enough that a good result is practically guaranteed since the sampling steps at the new higher res are going to be relatively slow. so after you gen the pictures you could send em over to img2img and upscale it yourself but forge actually has a button to do the hires fix after the fact for you. in picrel it's the furthest right icon under the gen. so you can gen in a batch and then select one and hit that button and it will run your hires fix upscaling on just that picture
nta but here's how it generally works: so you generally want to have your base gen resolution one of the standard sdxl sizes to avoid anatomy and composition errors, 832x1216, 1024x1024, 896x1152 whatever and then use hires fix or img2img to upscale from there.
'hires fix' is a checkbox on the main txt2img page of forge that does two things: it will first upscale (basically resize in this context) your image and then run additional sampling steps on your image at a denoising strength you specify. the denoising strength is a factor of how much to respect the original image versus ignore it. too high and you'll start getting back some of those composition errors you're trying to avoid in the first place, too low and you won't add the additional detail you're trying to get, so experiment with it a little.
important to note is the hires fix feature is literally just an automated way of img2img'ing your own gen at a higher resolution
anyway for a recommended workflow unless you're running a 5090 or something you probably don't want to automatically hires fix every picture that you gen unless the composition is simple enough that a good result is practically guaranteed since the sampling steps at the new higher res are going to be relatively slow. so after you gen the pictures you could send em over to img2img and upscale it yourself but forge actually has a button to do the hires fix after the fact for you. in picrel it's the furthest right icon under the gen. so you can gen in a batch and then select one and hit that button and it will run your hires fix upscaling on just that picture
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