cd/m2 vs lumens

Questions and answers on how to convert things from one unit or system to another


cd/m2 vs lumens

Postby mr_svperstar » Mon Feb 11, 2008 7:06 pm

Hi guys,

Bit confused on the light of globes, was wondering if anyone could give me an answer.

Im looking at aquarium lighting and ive found a T4 Fluro with a rating of 330 lumens, then Ive seen a CCFL but its rating is 30,000 cd/m2.

Which is brighter?

Why arent they in the same language? They are both circular tubes about the same size emitting light in all directions. I dont see why one would have a measure of distance involved in it.

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