On 8/10/13 08:49 , Joe from Kokomo wrote:

On 8/9/2013 2:33 PM, D. Peter Maus wrote:

So far, I"m getting the equivalent of 75w incandescent light out of
one 8.5W LED lamp.

On 8/9/13 18:48 , Joe from Kokomo wrote:

The URL/ ad that you quoted said:

Stock Code: ETI-520163MD
8.5 Watt - LED Light Bulb - Omni-Directional A19 - 3000K Warm White -
600 Lumens - 50 Watt Equal

They advertise it a 50 watt equivalent but you are saying it's the same
as 75 watts. If it really is close to 75, one would think they would not
be shy and call it 75.

Are you actually measuring the lumen output or just "eyeballing" it? Do
you have higher than 'normal' line voltage?

Not pickin' on ya, D.P. It's just that inquiring minds want to know why
the difference. :-)

On 8/10/2013 7:46 AM, D. Peter Maus wrote:

Dial it back, Joe.

I did mention that I used a light meter to measure the output. Were
you not reading?

Yes, I was reading and here is what you said, input, not output:

First blush, nicer, more color accurate light. And, using my light
meter, more of it for the energy input.



"...using my light meter, more of it for the energy input"? Maybe my bad
or maybe not. Your grammar is a little convoluted and it really isn't
very clear (to me at least) what that statement meant. To most people,
energy *input* refers to the 8.5 watts the bulb draws from the AC line,
not the lumen *output*.


And 'more of it' refers to the light measured with the light meter.



You further state:

I'm at the beginning of these lamps' life cycle. So output is higher
than rated.

It would be interesting to see if the manufacture has a graph that shows
lumen output versus hours of operation.

I'm sure they do. White LED's all decay.