iJewel3D Docs

Appearance

Tonemapping ​

Tonemapping controls color grading of the final render — exposure, saturation, and contrast. Small adjustments here can dramatically improve the look of your jewelry. This section also contains Clip Background, the key setting for transparent background exports.

Where to Find It ​

This section is located on the right panel, inside the Post ProcessingPost Processing tab, in the Tonemapping section.

Tonemapping settings

Mode ​

The Mode dropdown selects the tonemapping algorithm. Each mode produces a different color response.

ACESFilmic
Default. Cinematic colors with natural highlight rolloff. Recommended for most jewelry renders
Linear
No tonemapping — raw HDR values. Useful for post-production color grading
Reinhard
Classic curve — softer, less contrasty than ACES
Cineon
Kodak film response — warm, slightly desaturated analog film look
Uncharted 2
Filmic curve — good balance between contrast and highlight detail
AgX
Modern approach — handles bright saturated areas better than ACES, prevents color burn-out

Settings ​

Tonemap Background
Checkbox — applies tonemapping to the background as well. When off, only the 3D model is affected
Clip Background
Key setting for transparent exports. Removes the background and sets alpha to 0 — export as PNG to get a transparent image
Exposure
Slider — overall brightness. Default 1.00
Saturation
Slider — color intensity. Increase for more vivid rose gold or colored gemstones. Default 1.00
Contrast
Slider — difference between light and dark areas. A common adjustment is bumping this to 1.01–1.05 for a more polished look. Default 1.00
Render Depth
Checkbox — shows a black-and-white depth visualization instead of the color render. Useful for previewing Depth of Field ranges or creating depth maps for compositing

Transparent Background

Enable Clip Background, disable Scene → Ground → Visible and Progressive Shadow, then export as PNG. Watch the How to Make Pure White and Transparent Background tutorial.