There was a discussion similar to this about a year ago on the "Ask the Community" section. Unfortunately, with this new-style forum, I seem unable to go back that far to find my post and give a link. The discussion was around GU10-fitting LED spotlights and claims that, at around 300 lumens output, they were equivalent to 50 W halogen MR16 lamps. I reckon that a 50 W MR16 lamp gives over 600 lumens, but we were unable to find official endorsement of this. Several people made helpful contributions but the conclusion was that MR16 halogen lamps, now apparently withdrawn from production, were marketed before the present requirement to bear lumen output on packaging and advertising. Hence apparently exaggerated claims could not be challenged against official figures. It sounds as though something similar applies here. Halogen floodlights have been around for a good many years.

There was a discussion similar to this about a year ago on the "Ask the Community" section. Unfortunately, with this new-style forum, I seem unable to go back that far to find my post and give a link. The discussion was around GU10-fitting LED spotlights and claims that, at around 300 lumens output, they were equivalent to 50 W halogen MR16 lamps. I reckon that a 50 W MR16 lamp gives over 600 lumens, but we were unable to find official endorsement of this. Several people made helpful contributions but the conclusion was that MR16 halogen lamps, now apparently withdrawn from production, were marketed before the present requirement to bear lumen output on packaging and advertising. Hence apparently exaggerated claims could not be challenged against official figures. It sounds as though something similar applies here. Halogen floodlights have been around for a good many years.