Download and Installation

Arnold, KtoA, and other downloads are available here.  Installation instructions come with KtoA, but can also be viewed here: Installation.


  • Arnold: 4.2.16+
  • Katana: 2.1v5+, 2.5v4+
  • Platforms:
    • Linux: x86-64, RHEL 6+ or compatible glibc
    • Windows: 7+ on x86-64, with VC++ 2015 redistributable installed


  • Updated to Arnold KtoA is now updated to Arnold, which includes a handful of bug fixes.  See the release notes for more information.

Bug Fixes

  • #150 Setting low_light_threshold has no effect


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