Which type of light is brightest?
When compared to other types of lighting product, LED lights are the most energy efficient and offer a brighter light for the same wattage.
Good quality LED fixtures now output around 170 lumens per watt;a fluorescent puts out around 110.
However, that’s just part of the story!
The lumen output from a LED is measured inabsolute photometry(i.e. it is the total output net of ballast and fixture) whereas fluorescent & other traditional lamps & bulbs is measured in relative photometry. That means the ballast and the fixture are not taken into account.
The 110 lumens referred to above relates to the bulb/ tube alone. In absolute photometry it may reduce to as low as 50 lumens, for example, in a recessed fitting.
Always check that where lumen per watt are quoted in absolute terms.
