Replacing downlights in kitchen

jpaul said:
I thought daylight was 5000+ , I made the mistake of getting that way back(some crees that cost $$$ & wouldn't die)
caveat - you cannot see/adjust a gas hob burner easily.
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4k - 5k will render the most 'natural light' - above 5k the colour rendering rendering becomes very white and intense - this is more akin to bright sunlight and not the normal UK daylight. Over 6k and the light starts to have a blue hue to it. It is also dependent on how accurate the CRI of the bulb is. Cheap bulbs tend to have a lower CRI and so their colour rendering maybe a bit 'off'. CRI becomes important if you are mixing bulb brands as a 90+ CRI will be pretty accurate colour wise and 2 bulbs of the same colour temp and CRI, even if they are different brands, should look the same. Drop down to a CRI of 80 and you will start to notice the difference in the colour of light from the bulbs, even if they are marked as the same colour temperature. Probably not too important in domestic space, but in retail or particularly gallery space, it can be quite critical. It is important though if you are trying to mix lighting types (eg led downlight and led ribbon under cabinets) as low CRIs can make them look completely different and ruin a uniform lighting effect (which is often what is seen on high end - not Wren, kitchen installs).
 
SimonR said:
4k - 5k will render the most 'natural light' - above 5k the colour rendering rendering becomes very white and intense - this is more akin to bright sunlight and not the normal UK daylight. Over 6k and the light starts to have a blue hue to it. It is also dependent on how accurate the CRI of the bulb is. Cheap bulbs tend to have a lower CRI and so their colour rendering maybe a bit 'off'. CRI becomes important if you are mixing bulb brands as a 90+ CRI will be pretty accurate colour wise and 2 bulbs of the same colour temp and CRI, even if they are different brands, should look the same. Drop down to a CRI of 80 and you will start to notice the difference in the colour of light from the bulbs, even if they are marked as the same colour temperature. Probably not too important in domestic space, but in retail or particularly gallery space, it can be quite critical. It is important though if you are trying to mix lighting types (eg led downlight and led ribbon under cabinets) as low CRIs can make them look completely different and ruin a uniform lighting effect (which is often what is seen on high end - not Wren, kitchen installs).
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CRI is important in a room you will spend any significant amount of time, ie an office, bedroom, living room, kitchen etc,
Unfortunately most of the LED bulb shopping I have done CRI doesn't seem to be too important to either manufacturers or the retailers, I have found in general high CRI bulbs more expensive.
above 90 are nowhere as available and above 95 (the point you really ant to be at) are very very scarce.

I've just paid ~£15 a bulb for some "warm" GU10s that have CRI >95, they haven't arrived yet though so I can't tell you if the bulb lives up to its marketing.
 
richieboy said:
This combo has worked out really well for me, really simply to replace my existing downlights, dead happy with the both the lamp holders and the bulbs.
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the CRI of your bulbs is 80

Colours in the room these are in won't be great. They won't be awful as 80 is still quite high.

This page explains it better than I ever could

https://www.takethreelighting.com/understanding-cri.html

Even if you don't read the explanation just look at the difference in the pictures :)
 
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