---
name: "lampcolor"
section: "1"
platform: "linux"
package: "radiance"
version: "4R1+20120125-1+b1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/lampcolor"
---

# lampcolor(1)

compute spectral radiance for diffuse emitter

## NAME

lampcolor - compute spectral radiance for diffuse emitter

## SYNOPSIS

**lampcolor** \[ lamptable \]

## DESCRIPTION

*Lampcolor* is an interactive program for computing the appropriate color for a diffuse emitter. From the total lumen output and a simple description of the fixture geometry, the radiance for a diffuse fixture is calculated. Since most light fixtures are not really diffuse, the preferred method is to use luminaire distribution data (see *[ies2rad(1)](/ies2rad/1.md)).*

A table of lamp colors and depreciation factors is used to get the color for a specific lamp type. If "white" is specified, the lamp will be uncolored. This is probably preferable for scenes with only a single variety of lamp in order to produce color-balanced images.

## ENVIRONMENT

RAYPATH		Directories to check for lamp table

## FILES

lamp.tab		Default lamp lookup table

## AUTHOR

Greg Ward

## ACKNOWLEDGEMENT

Work on this program was initiated and sponsored by the LESO group at EPFL in Switzerland.

## SEE ALSO

[ies2rad(1)](/ies2rad/1.md)