Hi all,

**1.** I'm wanting to clarify what the unit of measurement the following have in respect to real-world values:

*CoronaLightMtl *

CoronaSunI believe it's W/(sr.m^2) for both especially the CoronaLightMtl going by the

helpdesk page.

Corona supports Candela (cd), Lumen (lm) and Lux (lx) units. If it's not specified (for example in standard lights, Corona material's self-illumination, or Corona Light material's intensity), the unit used is Watts per steradian per square meter - W/(sr.m^2).

**2.** Also is W/(sr.m^2) which is Coronas' default for CoronaLights' the same as W/m^2 which is the unit I'm trying to convert to or in laymans terms Watts? If not, how can this get converted to Watts?

**3.** I want to convert to watts from the following:

**W/(sr.m^2)**No conversion required? Is this just watts?

**Lumen (lm)**What is Coronas internal value for lumens per watt? 15, 16? These are the two values I've seen knocking about the internet.

https://sciencing.com/compare-led-light-output-incandescent-bulbs-3061.htmlhttps://www.rapidtables.com/calc/light/lumen-to-watt-calculator.htmlLumens / (Lumens per watt) = Watts

P = 900 lm / 15 lm/W = 60 W

**Candela (cd)**Candela / 683 (Lumens per watt) = Watts

P = 40980 cd / 683 lm/W = 14.64 W

**Lux (lx)**Lux / 2145.708 =

P = 128742.469 lx / 2145.708 = 60 W

I wanted to check this before anything else.

Cheers.