On 28/11/2014 14:40, Broadback wrote:
On 28/11/2014 11:15, Dave Plowman (News) wrote:
In article ,
therustyone wrote:
You could get one example of each lamp and measure the light on the
ground with a meter:

I'd recommend this too. Makers tend to lie through their teeth when
giving
light levels from the latest whizz bang technology.

Just a thought, maybe I will get shot down inflames, but could not a
camera light meter be used?

There are apps for mobile phones...

Have no idea as to their accuracy, reproducibility, etc.

--
Rod