These adverts are supporting the forum's costs and the products/services are not endorsed by the forum owners.

Which beam will be percieved as "brightest"?

Discussions concerning DMX gear in general.
Post Reply
Starcruiser
Starting to get to grips with FreeStyler
Posts: 18
Joined: January 23rd, 2010, 10:44 am
FreeStyler Version: 3.2.8
I Use FreeStyler for: Church
Twitter: twitter.com/

Which beam will be percieved as "brightest"?

Post by Starcruiser »

Hi,
I want to add some moving heads to our band show and we are looking at 2 alternatives:
1) 60 Watt LED with a beam angle of 18°
2) 45 Watt LED with a beam angle of 12°

At first we thought that 60W will be brighter - but is it really so? Since the beam is 18° more lumen will be spread on a greater area and perhaps the beam will be "weaker"?''

Any thoughts?

//BR Magnus

SiGNe
Starting to get to grips with FreeStyler
Posts: 17
Joined: October 14th, 2012, 7:30 pm
FreeStyler Version: 3.6.50
I Use FreeStyler for: Home Lighting Control

Re: Which beam will be percieved as "brightest"?

Post by SiGNe »

60watts
A 60 watt light with a 12 degree beam should have the same brightness.
If you'd put a ring around the light to make the beam smaller it's still a 60 watt lamp.

And if you should calculate the amount of watt per degree the difference isn't that big either
60/18= 3,33 watts per degree
45/12=3,75 watts per degree

Post Reply

Return to “Other DMX/Lighting questions”