Illuminance

[Marineboy63]

A question of illuminance.

 

According to the Chauvet website.

 

The Slimpar quad 12 has an illuminance of 4,500 lux at 2M

 

 

The Chauvet Par quad 18 (obviously better and more expensive and therefore, one assumes brighter) has an illuminance of 1,210 lux at 5M. But what's that at 2M?

[MarkPAman]

7562.5 (in an ideal world)

 

http://www.softschools.com/formulas/physics/inverse_square_law_formula/82/

Edited November 27, 2019 by MarkPAman

[Marineboy63]

7562.5 (in an ideal world)

 

http://www.softschoo...law_formula/82/

 

Thank you for that prompt and precise response. If only the manufacturers could be that helpful.