Photometry shows light distribution curves and metadata of IESNA and EULUMDAT photometric files which describe the light distribution of light sources like lamps and luminaires and are used mostly for data transfer in the lighting industry and in 3D graphics.
Photometry allows editing the source content of the opened photometric file and shows the following information contained in the opened files:
- Light distribution curves
- General information (Catalog Number, Manufacturer, Description, etc.)
- Photometric properties (Light Output Ratio and Downward Flux Fraction)
- Lamps and ballast information
- Luminaire and luminous opening geometry information
- Additional properties (Test number, issue date, test laboratory, etc.)
- Intensity Values for selected C planes and gamma angles
Screenshots
Observed history
| App | Change | Version | When ↓ |
|---|
No observed changes yet.
The initial import establishes a baseline. Future version changes will appear here.
Browse the app catalogue →Upstream releases
Release notes supplied by the developer. These dates are not Flathub package publication times.
3.5.19 Aug 2026
Improves performance when updating photometric data in the text editor.
3.5.018 Apr 2026
Adds information about angles and intensity values under the cursor in the LDC zoom page and improves support for mobile screen sizes.
3.4.018 Jan 2026
Uses GNOME runtime version 49
3.3.029 Dec 2024
Quick calculation of required number of luminaires for illuminated zones.