Backgrounds That Obey the Light on the Product

What it is for

A method for putting a product into a generated scene without the result announcing itself as fake. It starts from the light and camera angle already in the photo, gives a prompt template built on those two facts, and lists the six things that make you throw the result away. It prevents backgrounds that contradict the product, and scenes that promise something the buyer will not receive.

The skill Copy

Use when a product is being placed onto a generated background.

The rule: the background must obey the photo, not the other way round.
Look at the product first and write down two facts - which side the
light comes from, and how far above the product the camera was. Ask for
a background that matches those two facts.

Prompt shape to paste and edit:
  "[surface material] surface, [wall or backdrop] behind, soft light
  from the [left/right] and slightly above, shallow depth of field,
  nothing overlapping the product, no text, no logos, no people"

Reject the result if any of these is true:
- The shadow points a different way than the highlight already on the
  product. This is the most common giveaway by a wide margin.
- The product floats. It needs contact: a darker, tight, soft line
  where it meets the surface, not a drop shadow sitting behind it.
- A table edge or horizon crosses behind the product at a height no
  camera at that angle could have produced.
- Reflections in the scene do not include the product.
- Generated props imply a scale the product does not have. A mug beside
  a generated laptop tells the customer the mug is small.
- There is invented text, a fake brand mark, or a second half-product.

Two rules that keep you out of trouble:
- Never let the generated scene alter the product itself. Colour,
  finish and shape must be what the buyer receives.
- If the scene implies an accessory that is not in the box, remove it
  or state it on the listing.

Keep the plain cutout as well as the scene. Ads want the scene;
catalogue pages and marketplaces usually want the plain one.

How to install it Copy

1. Open the tool and start a new conversation, project or template.
2. Paste the text below wherever the tool keeps standing instructions
   — usually called system prompt, instructions, or persona.
3. Save it so it applies to every run rather than a single message.

Did it work for you?

Where it came from