Facezoom for Kontext

Facezoom

Boom Headshot! Zooms into a face and enhances detail. Works much better than vanilla kontext. In comparison images, the cropped original is an auto bbox crop with yolo which is something you can use but this lora could probably replace a face crop + upscale in your workflows.

V1.1:

Trained at 1024px vs 768px Produces more consistent crops Better details

Less face elongation

Prompt

f4cezoom

Can add other face modifications, expressions, eye color etc as modifiers. Anything that kontext can do as standard.

Recommended settings

Flux guidance: 3 (2.5-3.5)

Denoise: 1 (0.95-1)

Strength: 1.25 (1.00-1.25)

Limitations

It's not magic, heavily pixelated or noisy images won't work well

Seed variability, if it doesn't get the correct crop you want try a different seed

Sometimes faces may be slightly elongated

Doesn't work as well for landscape orientation

Mixed results with multiple subjects

Trained with Ostris AI-Toolkit

Settings

train_unet: true

train_text_encoder: false

gradient_checkpointing: true

noise_scheduler: flowmatch

optimizer: adamw8bit

timestep_type: sigmoid

content_or_style: balanced

optimizer_params:

weight_decay: 0.0001

unload_text_encoder: true

lr: 0.0001

ema_config:

use_ema: true

ema_decay: 0.99