A product can have a large dark shadow and still look as if it is hovering. The problem may be the tiny gap directly under its base, an incompatible light direction, or a glossy reflection on a surface that should be matte. Check those relationships before adding more darkness.
Download the review worksheet · Ground one product photo
Check 1: does the base touch the surface?
The contact shadow is the narrow dark region near the points where the object meets the surface. It is not the same as the larger cast shadow extending away from the object. If a bright gap separates the base from every part of the shadow, the object can appear airborne.
For our terracotta cup, inspect the lower rim first. A cup with a recessed foot may touch only along part of its base, so do not paint a thick black line around the entire silhouette. Compare the original photo if the construction is unclear. The hero is an editorial illustration, not a measured repair example.
Check 2: does the wider shadow agree with the light?
Identify the brightest side of the product and the apparent main light. The cast shadow should make sense with that arrangement. Two contradictory shadows may mean an old source shadow survived after a new one was added.
| Visible problem | Likely check | Smallest useful repair |
|---|---|---|
| Shadow detached from base | Contact area | Reconnect the actual touching edge |
| Shadow points toward main light | Light relationship | Rebuild direction or revise lighting |
| Hard black oval on soft scene | Light size and softness | Reduce the artificial edge and density |
| Product still seems tilted | Perspective or cutout | Fix alignment before adding shadow |
These are diagnostic clues, not a complete lighting simulation. Multiple real lights can create more than one shadow. The goal is a scene whose relationships are understandable, not a rule that every photo must contain exactly one.
Check 3: does the surface support a reflection?
Matte paper should not look like a mirror. Polished stone may show a reflection, but it should follow the object and surface plausibly. Do not add a mirrored duplicate merely because a preset makes it look premium.
Photoroom’s shadow tool page describes generating shadows from image lighting. That is a provider capability, not a guarantee that every resulting shadow is correct. Your source and the three checks remain the acceptance criteria.
Use a bounded repair brief
Replace the cup and light description with what your source actually shows. If a mask is available, constrain the edit to the contact and shadow region. Keep a copy of the original so you can spot product changes introduced during the repair.
How QuestStudio helps
Use Image Lab for one reference-based correction, then compare the result at full size and in the final listing crop. Follow the product photo approval checklist to confirm that a better shadow did not come with a different handle or label.
For several objects, the flat lay composition guide helps keep each item grounded. For glass, use the transparent-product workflow because transmitted light and background visibility add a separate problem.
Frequently asked questions
Why does my product still float after adding a shadow?
The shadow may be detached from the true contact area, or the product perspective may not match the surface. Darkening the shadow alone will not fix either issue.
Are contact and cast shadows different?
Yes. Contact describes the tight relationship near where the object meets the surface; the cast shadow extends away according to the light and geometry.
Should every product have a reflection?
No. Reflections should match the material of the supporting surface. A matte background usually should not show a mirror-like duplicate.
Can I keep the original shadow after changing the background?
Sometimes, if the new scene matches its perspective and lighting. Otherwise the retained shadow can conflict with the replacement scene.
Start with one version you can inspect. Ground one product photo, then use the worksheet to decide what needs another pass.