3500K/50W IES Files: 10 Degree, 17 Degree, 24 Degree, 36 Degree

4100K/50W IES Files: 10 Degree, 17 Degree, 24 Degree, 36 Degree

4700K/50W IES Files: 10 Degree, 17 Degree, 24 Degree, 36 Degree




The IESNA updates their standards every few years, however most lighting companies still adhere to the 1991 format in order to accommodate the greatest number of lighting application programs. The main difference in the formats is the date at the top of the file. Line 1 of the file can be changed using a text editor (such as NotePad, WordPad or Word) from IESNA91 to IESNA:LM-63-1995. This does not change the data, it only changes the way the software will read it. Most lighting design software will read both formats.