Spotlights vs. Floodlights: What's the Difference?
In order to address some of the issues that customers regularly have about floodlights and spotlights, we developed this resource:
What distinguishes a spotlight from a floodlight?
For my lighting project, what kind of beam spread do I require?
How can I predict the size of my light bulb's beam at a given range?
Let's start with the essentials:
A spotlight emits a focused beam of light that is typically only 45 degrees broad. This beam is more focused and simpler to direct and regulate.
The beam spread of a floodlight can be up to 120 degrees. With the same wattage and lumen output as a spotlight, it can illuminate a bigger area.
Using spotlights and floodlights: Use a spotlight to draw attention to specific items such wall art, architectural details, exhibit pieces, or landscape features.
Use a floodlight to illuminate bigger areas such as parking lots, stages, warehouses, roads, and other areas that require widespread, even lighting.
Beam width: It's not always helpful to know the breadth of a light's beam in degrees when planning your lighting design. Knowing the beam width in feet at a certain distance would be considerably simpler. Fortunately, there is a straightforward formula you may use to determine this:
Beam Width = Angle of Beam x 0.018 x Distance from Light Bulb
Therefore, use the following formula to get the beam's width at a distance of 10 feet from an 80-degree floodlight:
80 degrees times 0.018 times ten feet equals 14.4 feet broad.
Here's how to calculate the beam width of a spotlight with a 30 degree beam from a distance of 15 feet:
30 degrees times 0.018 times 15 feet equals 8.1 feet broad.
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