Spotlighting uses narrow beams (generally 25 degrees or less) to put a concentrated pool of light on a specific target, common in retail, galleries, and signage.
| Beam angle | Best for |
|---|---|
| 8 to 15° | Small objects, jewelry, single artworks |
| 15 to 25° | Mannequins, displays, signage |
| 25 to 35° | Larger displays, grouped items |
Sizing the spot
Use the beam-angle formula to match the lit circle to the object: beam diameter equals two times the distance times the tangent of half the beam angle. Pick the angle that just covers the target.
Because narrow beams pack lumens into a small area, even modest lamps produce high illuminance on the target — check CBCP rather than total lumens.
See the Beam Angle Formula and the CBCP Comparison Chart.
Using spot lighting effectively
Spotlighting uses narrow beams — generally 25° or less — to drop a concentrated pool of light on a specific target, common in retail displays, galleries, and architectural accents. The narrower the beam, the higher the center-beam intensity (candela) for the same lumen output, so a tight spot reads dramatically brighter on its target than a flood. Aim for a contrast ratio of roughly 3:1 or more between the highlighted object and its surroundings so the accent reads clearly. Mind the beam’s spread at the target distance (spot diameter grows with throw), and use glare control — snoots, baffles, or honeycomb louvers — so the bright source itself isn’t visible in sightlines.