Since 2011 I have more A19 in the stairway and in hallways installed, so far there is no failure, the luminous flux has not yet subsided measurable. To test the luminous flux I had in high school lighting laboratory in the integrating sphere, light currents were measured up to 520lm for example, in Led-Tech, I can confirm. LG therefore goes against conservative and expects the loss to half life down (~ 15%). Advantages over incandescent bulbs, there is the case of lamps with poor reflectors because the light is much more directly radiated downwards. Cons, if you need a radial Abstahlverhalten or a good color rendering. Since I prefer a high quality of light in the living room there is only light with a color rendering index CRI> 90Ra in question. The food or the wine should look yummy, too), in particular the red part of the A19 there is too little to me. The efficiency is not quite up to date, there will certainly change with a new model which. The next generation in Zumtobel eg ranges from 100lm / W at 94Ra / 2700K.
