Wide and focused light

When choosing your bulb you should always keep in mind the width of the area you want to illuminate. This guide shows how the shape of a light bulb determines the width of the light beam. Spotlights and standard lamps can achieve a different distribution of light which is either wide or focused.

Related How Tos

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Base type

Learn about the differences between base types and how to pick the right one for your light fixture.


Amount of Light

See how lumen indicates the amount of light that a bulb produces.


Watt and lumen

Learn more about the difference between watt and lumen and what it says about a bulb.


Color Temperature

See how color temperature determines if a bulb produces warm or cool light.


Color Rendering Index

See how a high color rendering index makes colors appear natural.