LG E27 810lm LED bulb €7.90

paddyp

http://www.leds.de/LED-Lampen-und-Leuchten/LED-Lampen-Leuchtmittel/LG-LED-Lampe-E27-12-8W-warmweiss.html

Thought this was a great price for 810lm branded, postage is €7.90 though so you need to be buying a few.

Other offers:
http://news.leds.de/m/6616483/

To compare led vs cfl a philips genie 14w cfl which claims to be 75w is 820lm and takes several seconds to reach 60% brightness and much longer to reach full brightness.
The cfl life expectancy is 40% of the led's at considerably reduced light output for the latter half and cfl switching cycles are 25% of the led's and for short on off cycles such as a bathroom much less again.

keithclancy

paddyp wrote: »

http://www.leds.de/LED-Lampen-und-Leuchten/LED-Lampen-Leuchtmittel/LG-LED-Lampe-E27-12-8W-warmweiss.html

Thought this was a great price for 810lm branded, postage is €7.90 though so you need to be buying a few.

Other offers:
http://news.leds.de/m/6616483/

Do you use screw in light sockets in Ireland ?

TheDriver

depends on the light fitting, I would have a few screw in types around the house though they tend to be the narrower version

fl4pj4ck

IKEA ones use screw type fittings

paddyp

fl4pj4ck wrote: »

IKEA ones use screw type fittings

+ the majority of b&q, aldi, lidl and a lot of the fancier stuff in lighting shops

wil

Some in Aldi at the moment but very few Bayonet cap - price €6 to 12

Lumen vs wattage is a bit confusing and conflicting on the package and I am not inclined to believe the claimed output. In my experience very few meet the claimed output.
Also they are warm white / 2700k which I find too yellow.
Very hard to find daylight >6000k with decent output. Saw some in specialist shops, but very expensive and only quite recent

paddyp

wil wrote: »

Some in Aldi at the moment but very few Bayonet cap - price €6 to 12

Lumen vs wattage is a bit confusing and conflicting on the package and I am not inclined to believe the claimed output. In my experience very few meet the claimed output.
Also they are warm white / 2700k which I find too yellow.
Very hard to find daylight >6000k with decent output. Saw some in specialist shops, but very expensive and only quite recent

DIM2 regulation should sort out the dross, at lest when sourced through legitimate channels of couse the crap will continue to come from the far east.

Its funny that now its hard to find a cold lamp it used to be hard to find anything under 3500k. 6000k plus is overcast colour temperature personally find it depressing, even photo and video studios dont' use more than 5500k, don't see it taking off in a home setting although theres a big commercial market for pl and t5 tubes in 6500k so leds will no doubt fill those shoes.

Capt'n Midnight

keithclancy wrote: »

Do you use screw in light sockets in Ireland ?

No, we use B22 for which there is a ready supply of cheap bulbs.

Light sockets are B22.

E27 light sockets here usually one particularly massive turnip of a thing

But almost every lamp sold by DIY store uses E14/E27. The only advantage is to save them a few pence. And so they can screw you because screw in bulbs here are a lot more expensive than the equivalent B22 ones

/RANT

wil

paddyp wrote: »

DIM2 regulation should sort out the dross, at lest when sourced through legitimate channels of couse the crap will continue to come from the far east.

Its funny that now its hard to find a cold lamp it used to be hard to find anything under 3500k. 6000k plus is overcast colour temperature personally find it depressing, even photo and video studios dont' use more than 5500k, don't see it taking off in a home setting although theres a big commercial market for pl and t5 tubes in 6500k so leds will no doubt fill those shoes.

I dont know why dull yellow "warm" white is "favoured" in Ireland, it's anything but warm, its dull and depressing. Good daylight is white and bright and well above the the typical 2700k that is so common here. could be we are so used to dull. I could easily find 5500k+ cfls in other countries but not here and now even leds are heading down the dull yellow. Supplies and variety in the domestic market here seem very limited and perhaps skewed by someone deciding everyone likes "warm" white. I dont. So if you come across 5500k+ decent output leds for a reasonable price, please let us/me know /coolrant

paddyp

wil wrote: »

I dont know why dull yellow "warm" white is "favoured" in Ireland, it's anything but warm, its dull and depressing. Good daylight is white and bright and well above the the typical 2700k that is so common here. could be we are so used to dull. I could easily find 5500k+ cfls in other countries but not here and now even leds are heading down the dull yellow. Supplies and variety in the domestic market here seem very limited and perhaps skewed by someone deciding everyone likes "warm" white. I dont. So if you come across 5500k+ decent output leds for a reasonable price, please let us/me know /coolrant

Daylight colour temperature is only a notion. Daylight covers the entire spectrum, daylight LEDs colour temperature and cri is a bit of a fiddle, as they stand will they have a massive peak in violet that moves up and down the spectrum according to the 'temperature' a large bump in the yellows and greens and practically nothing the in reds. Daylight cfls are a bit better but have a series of peaks according to the phosphors selected.



If you want daylight you'll have to fit metal halide bulbs.


As to why people favour 2700k, 'daylight' colour temperatures affect your central nervous system prevent you from relaxing/winding down and affect sleep, theres load of research on it. I do agree theres a happy medium but people don't want noon in the sahara with their home lighting.

There was a coffee shop near where I used to live where if people were hogging the tables like a bunch of students sitting around one cup of cold coffee using the free wifi, the owner would gradually fade in some cool white lights over the table the effect was amazing.

The only place I ever see 6500k is factories where it probably necessary to keep the staff awake and stop them removing their digits and other extremities in machines.

The only cheap very cool bulb besides the unbranded junk I know of at the moment is this one still only 5000k, they do other bulbs in 5000k too but misco don't stock them:
http://www.misco.ie/product/209957/Integral-LED-GU10-4W-5000K-290lm-Non-Dimmable

[edit] Apparently the other 5000k bulbs will be available from misco last this month [/edit]

I have the 3000k version, light output is better than i expected for the lumens and the lens does an excellent job of distributing the light

Capt'n Midnight

I'd dispute the LED spectrum above on the basis that there are different types of LED and that looks like a Blue led + fluorescent coating, tri colour LED's would give a very different spectrum. There's even quad colour LED's being researched.

Admittedly a tri colour would be mostly three spikes.