Tips and tricks
Nano Banana - How to replace subject and keep all other features of the photos
Go to Chat GPT and ask for
give me the text prompt for nano banana 2 to replace the character from image 01 with the character from image 02 but keep all other features of the photoit will give you a json prompt like this:
{
"model": "nano-banana-2",
"task": "identity_replacement",
"input_images": {
"base_scene": "image_01",
"identity_reference": "image_02"
},
"instructions": {
"goal": "replace the person in the base image with the identity from the reference image",
"preserve": [
"pose",
"camera angle",
"composition",
"body position",
"clothing",
"lighting",
"background",
"environment",
"image grain and quality",
"original framing"
],
"replace": [
"face",
"hair",
"body shape",
"skin tone",
"facial features"
],
"identity_transfer": {
"source": "image_02",
"match_features": [
"face structure",
"jawline",
"eyes",
"eyebrows",
"nose",
"lips",
"skin tone",
"hair style",
"hair color",
"body proportions",
"muscle definition"
]
}
},
"rendering": {
"style": "photorealistic",
"quality": "high detail",
"resolution": "4k",
"lighting": "match original image",
"consistency": "identity accurate to reference image"
},
"constraints": [
"do not change the outfit",
"do not change the background",
"do not change the pose",
"do not alter the camera distance",
"do not stylize or cartoonize",
"maintain natural skin texture"
]
}