IESviewer is freeware!

The latest release of IESviewer (Version 3.6) is available now!

IESviewer is the world's most popular photometric viewer. It lets you quickly view, find and convert photometric data files.¹

Most of the features present in other viewers are present in IESviewer, including:

• view photometric curve
• description of the photometric files
  • luminaire manufacturer
  • luminaire catalog number
  • lamp catalog number
  • lamp description
  • photometric type
  • intensity
  • dimension of luminaire
  • input watts
  • etc

Additionally, IESviewer support:

• unique curve and render realtime thumbnail of photometric files
• unique navigation by description instead of filename:
  • luminaire manufacturer (MANUFAC)
  • luminaire catalog number (LUMCAT)
  • luminaire description (LUMINAIRE)
  • lamp catalog number (LAMPCAT)
  • lamp description (LAMP)
• ultra fast preview
• realtime renderer
• comparing two photometric curves
• converting LDT to IES and IES to LDT (new!)
• Autodesk 3ds Max integration
• 3dsmax compatibility indicator and fixing tool
• available integration with other applications
• dragging files (copy to explorer, other applications)

¹ - The photometric data files (IES, LDT) commonly used by lighting fixture manufacturers to distribute the photometric information about their products.