by K_Naoki·Workflow
Images © K_Naoki. Used for product review; image policy.
Analysis Toolkit earns its place in the blender_extensions library for putting illuminance measurement and EV compensation inside Blender, mapping sky-texture values toward real-world lux. K_Naoki also replies to user questions in the add-on's reviews, and it currently holds a top rating from a single review.
Analysis Toolkit is a Blender add-on from K_Naoki that brings measurement into your 3D scenes. It includes lux measuring tools and an EV compensation value for tying Blender's lighting to real-world illuminance figures.
According to K_Naoki, setting the EV compensation value to around 9 to 10 EV with Blender's default sky texture can reproduce typical real-world lux levels. Because light behaves relatively in CG, the ratio between external shadows, internal shadows and artificial lighting matters. The relationship between sun and sky also changes with region and cloud or atmospheric conditions, so there is no single absolute value. You measure and reference the illuminance or EV that matches your target time of day and location.
Analysis Toolkit runs on Blender 4.2 LTS and newer and is released under the GNU General Public License v3.0 or later. The catalog lists version 1.0.1, last updated on 16 October 2025, and it holds a top rating from a single review. A demo video is available, and K_Naoki's GitHub page covers the source and further detail.
Analysis Toolkit is best for blender users who need in-scene measurements and lux or illuminance readings, including daylight analysis work.
Analysis Toolkit is completely free to download and use.
Analysis Toolkit is compatible with Blender 4.2 LTS and newer, so current long-term-support releases and later versions are covered. The catalog lists version 1.0.1, last updated on 16 October 2025. If you run an older Blender build, check K_Naoki's GitHub page before installing, since compatibility is stated from 4.2 LTS onward. A demo video is also available if you want more detail on the add-on before adding it to your setup.
Analysis Toolkit includes an EV compensation value that, according to K_Naoki, can reproduce typical real-world lux levels when set to around 9 to 10 EV with Blender's default sky texture. Because light behaves relatively in CG, the ratio between external shadows, internal shadows and artificial lighting matters, and the relationship between sun and sky changes with region and cloud or atmospheric conditions. There is no single absolute value, so you measure and reference the illuminance or EV for your target time of day and location.
Analysis Toolkit drew interest from a reviewer working in architecture, who valued getting accurate measurements from 3D models inside Blender and was especially interested in the lux measuring tools for real-world problems. That reviewer also suggested pairing it with a sun position add-on could suit daylight analysis. K_Naoki responded that setting EV compensation to around 9 to 10 EV with Blender's default sky texture can reproduce typical real-world lux levels. For the full feature set and how it fits your workflow, K_Naoki's GitHub page is the best reference before you install.
Analysis Toolkit is listed as free here in the catalog. For current licensing terms and any conditions, check K_Naoki's official page on GitHub. The add-on is released under the GNU General Public License v3.0 or later, which is an open-source license, so you can review and modify the source code within that license's terms. If licensing details matter for your workflow, the developer's page is the place to confirm exactly what applies to your use.
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