Ever needed to project a gobo or image to be a specific size but don't know what beam angle you need? Want to know how big the pool of light will be from your lantern? Want to calculate how far away you need to place a lantern?
Now you can! Using a little java script and simple trigonometry, fill in what you know and click the button to calculate the missing number
1 metre = 3.2808399 feet
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