Merry Kelvin Temps!

[lampeDépêche]

Here's a little photo essay on why color temperature matters, with lights provided by Vinh:

6500K

2700K

I think we can conclude that medieval cathedrals did not use cool white LEDs.

Thanks, Vinh! Merry Christmas and Happy Holidays to all.

 

[Jay T]

I'm convinced

 

[Chauncey Gardener]

The warmer is much more inviting.

 

[Kestrel]

Even when they were burning down, they were still on the Warm side of the spectrum.

 

[orbital]

+

Just yesterday I found a box of 7.5W 2200K filament LED bulbs under my desk. They have an antique look.
So went up to my garage and swapped out two on the front of garage and added a third bulb to my lamp post.

My overall lumens went up with another 13 Watts using 5 bulbs now~~~ it looks really nice and isn't glaring/harsh because of 2200K
the bulbs are listed at 700lm each

 

[PhotonWrangler]

Oh yeah, that looks much more inviting with 2700k lighting.

 

[PaladinNO]

Are higher CCT bulbs the norm elsewhere? I haven't paid much attention to it until very recenty, but the "default" CCT for (E14 / E27 socket) bulbs here in Norway is 2700K. Though the CRI is usually 70-80 as standard.

Any CCT below or above 2700K (then ranging from 1800K to 5000K) is more specialty bulbs, like the Philips WarmGlow or HUE-series. And for hCRI bulbs, it is either also specialty bulbs, 3-4 times the price, or over on the GU10 socket.

I got some WarmGlow 1800K E14 bulbs on the way for testing.

LED Glødemignion, ravgul, 15 W, B35, E14 | Philips lighting

Dekorer hjemmet ditt med naturlig lys | Philips lighting

www.lighting.philips.no

For typical indoor lighting, I've only bought the cheapest LED bulbs I could find (but only from Osram or Philips), but I think I will switch to these:

LED Glødepære, matt, 60 W, A60, E27 | Philips lighting

Opplev varmhvitt LED-lys som kan dimmes | Philips lighting

www.lighting.philips.no

About the 3 times the cost of the bulbs I bought last time, and these have the same specifications (also 2700K), but is listed as CRI90.

For 24/7 lighting, I recommend dimmable bulbs, even if the fixture isn't dimmable. The dimmable bulbs just seems more robust for constant use.
I got 4x wall lamps (2 on each side) in my private room that are E14, 40 W equivalent, and since changing to dimmable bulbs (Osram LED SuperStar mini globe) around 8 years ago now, I haven't needed to replace any of them.

 

[LEDphile]

Are higher CCT bulbs the norm elsewhere? I haven't paid much attention to it until very recenty, but the "default" CCT for (E14 / E27 socket) bulbs here in Norway is 2700K. Though the CRI is usually 70-80 as standard.

Preferred CCT seems to vary based on regional/cultural preferences - for example in Asia, cooler CCTs are often preferred and in India, CCTs above 6500K sell pretty well. But those high CCTs are not as preferred in Europe or the US (where above 4000K is uncommon for indoor applications, even for commercial lighting).

 

[PaladinNO]

Preferred CCT seems to vary based on regional/cultural preferences - for example in Asia, cooler CCTs are often preferred and in India, CCTs above 6500K sell pretty well. But those high CCTs are not as preferred in Europe or the US (where above 4000K is uncommon for indoor applications, even for commercial lighting).

Interesting. My first thought was how much sun does the areas get? In my mind, based on your information, it make sense that areas with a lot of sun and heat would prefer colder CCTs, whereas "darker" areas of the world - such as Norway, with our long winters - prefer warmer CCTs.

To me, any 6500K light feels "cold" and - I don't mean to be rude, this is just my immediate reaction when I see such a light - "we have it actually cold more than enough of the year, thank you very much".

Whereas our "standard" 2700K bulbs feels more homely and cozy. And with my recent discovery of the 519A 1800K, it's like "....ahhh, sunlight!".

Huh, that is interesting - and desipte having the CCT actually in front of me, I didn't consider it much - I'll be right back, I need to place my Convoy 3X21E, 519A 1800K light on my basement window frame again.

 

[gurdygurds]

I'm convinced

No….you're conVinhced.