Cutwise 2026.4.0

12 August 2026

Cutwise 2026.4.0 adds the Dead Zones metric, a unified Tasks interface with progress for every task, and a spectrum choice for Brilliant Story rendering.

From this release, Cutwise versions are named by year, so version 2026.4.0 follows version 6.22.

Highlights

Dead Zones metric

Everyone who evaluates diamonds now gets the Octonus Dead Zones metric. A dead zone is a large, stable dark area that you see in a diamond when it is slightly tilted. Both eyes see it at the same time, and it mostly does not depend on the lighting.

The metric analyzes the diamond under special lighting. This lighting takes into account the head profile and the body of a real observer, which block part of the light. The metric also emulates how the brain merges the images from the left eye and the right eye. Cutwise calculates the metric from photorealistic data (model rendering).

Sample collection: cutwise.com/~Y7kO

Four round diamonds with Dead Zones scores from None to Severe on the grade scale

The metric gives one of five grades:

Grade Meaning
None No meaningful dead zones. The diamond lights up evenly.
Light Small or faint dark areas that are hard to notice.
Medium Clearly visible dark zones in part of the diamond.
Heavy Large dark zones that cover a large part of the diamond.
Severe Large dark regions that dominate the look of the diamond.

Tasks interface

Users who run tasks in Cutwise get an updated Tasks interface.

  • One interface for all tasks. The panel now shows every task type, not only rendering.
  • Progress for every task. Tasks show their progress while they run, not only when they finish.
  • Estimated time remaining. Each task shows when it will probably finish, based on the statistics of previous runs.
  • Detailed task results. A task now shows full details: the parameters it used and any warnings it raised.

Tasks page with the progress of a running task and the details of finished tasks

Spectrum for Brilliant Story rendering

Users who render a virtual try-on episode for a lab-grown fancy color diamond can now select a synthetic diamond spectrum. The rendered color then matches how the diamond really behaves in light.

Brilliant Story General settings with the Spectrum row of color choices

Fixes

  • Carbon Viewer fixes and improvements.