Same photo. Same person.
Only the time of day changed.
This is a simple day-to-night background edit using a structured prompt
Lighting, sky, reflections and mood all shift naturally
No subject changes, no fake glow, no filters
Perfect for travel shots, lifestyle posts or making one photo work twice
{
"task": "background_edit",
"instruction": "Change the background from daytime to nighttime. Preserve the subject exactly.",
"subject_rules": {
"do_not_change": [
"face",
"body",
"pose",
"expression",
"clothing",
"hair",
"skin tone",
"camera angle",
"framing"
]
},
"background_rules": {
"time_of_day": "night",
"lighting": "natural nighttime lighting",
"light_sources": [
"street lights",
"building lights",
"window glow"
],
"sky": "realistic night sky matching the location",
"shadows": "soft, natural shadows consistent with light sources"
},
"constraints": {
"edit_background_only": true,
"match_original_location": true,
"maintain_depth_and_perspective": true,
"no_subject_relighting": true
},
"style": {
"photorealistic": true,
"no_stylization": true,
"no_cinematic_grading": true
},
"negative_prompt": [
"change subject",
"artificial glow",
"cinematic lighting",
"neon colors",
"fantasy elements",
"cgi look"
]
}