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5 Tips on How to Calculate Lighting Beam Widths
Now - is this solely the territory for the lighting geek OR is this really relevant to you?
It's actually a key principle to understand to help your lighting designs go from good ... to great.

In this short video Andrew gives you 5 practical tips to aid you in this process.



1. Choose what you are lighting - is it simply the floor or a piece of furniture or maybe an architectural element?
2. Light spreads increasingly wider the further it leaves it's source - so how wide would you ideally want the spread of light to go by the time it hits the lit surface?
3. Calculate the distance between light source and that surface.
4. Now draw to scale this distance with the source at one side and the rough desired spread on the other. Draw a line from the source to the edges of the desired lit width - the angle between these two lines is our chosen beam width.
5. Now select a lamp or fixture with a beam width as close as possible to that value.
Remember too that light is also used and chosen to highlight objects all along it's pathway
For example - if you use a floor light to uplight a column - you'll want to keep the beam width tight and follow the line of the architecture from the moment it leaves the source carefully considering how wide it will spread along it's path.

Another great benefit to purposefully choosing your angles of light also helps combat the glare that light can bring to the eye.
So let's start taking control and next time you choose your lighting - not only think of us here at Orange Lighting - but consider those beam widths.





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