Yuji high CRI LEDs.

Like some have said in YT comments, it looks a bit off compared to the old lighting. Might need to make some tweaks. Maybe it's the efficiency of them, perhaps the old LED's put out a bit less light overall and as a result (more light) these new ones look a bit more, harsh I think is the word I'm looking for, and even have a bit of a hotspot. Perhaps you could experiment with diffusing the light a bit? However I like the look of the new lighting much, much more compared to the old lighting. What kind of fixture are these in by the way?

The comparison video for the first two minutes clearly shows a greenish cast from the old LEDs, particularly reflecting off the MDF benchtop. Never that noticeable before but stands out like the proverbial canine's testicles in a side-by-side comparison. The high-efficiency red phosphor is clearly a big part of Yuji's special sauce. :)

Chris Talbot

I remember reading a comparison review done by a guy here in Australia who imported some US-made "High CRI" LED globes when they first became a domestic market product over there (we in the Antipodes had to wait about a year longer for them to become locally available, as is usually the case). At least one of them was a Philips, and I remember that it did well in his testing because it was the only brand I recognised. However, it was so long ago that the pricing will have changed dramatically, and the tested products are no doubt superseded so there's not much point in me going and finding the link. Philips would still be worth checking out though, as they have a long history and good reputation in electronics, optics and lighting products. Regarding "horribly expensive", bear in mind that good quality LED globes should have at least twice the lifespan of CFLs, they don't suffer from the steadily-lengthening-warm-up-time problem typical of aging compact flouros, and the better efficiency and colour rendering from the LEDs means human eyes are less sensitive to the gradual drop-off in brightness as they age, effectively extending the life span beyond the nominal usage hours stated on the packaging. To save a bit of money you could go with standard LED globes in places like bathrooms and above kitchen benches where the main priority is having plenty of light output and colour temperature/rendition is of secondary concern.

Chris Talbot

Great video! In this area I have to mention that Mike Wood also has a great article about color rendering where he points out a few flaws with the CRI measuring, and comes with an alternative, TM-30 which can give a greater on-paper understanding of the color rendering capabilities of a light source. <a href="https://www.mikewoodconsulting.com/articles/Protocol%20Fall%202015%20-%20TM30.pdf" rel="nofollow noopener" target="_blank">https://www.mikewoodconsulting.com/articles/Protocol%20Fall%202015%20-%20TM30.pdf</a> for those that like to dive off the deep end.

Potential use would be in Ralfy whiskey reviews to bring out the true colors of the beverages being reviewed. Be a good brother and throw em a bone!

Since the topic is at hand, can anyone recommend a US-voltage LED bulb with good color characteristics that isn't horribly expensive? We are about to make the jump to LEDs having exhausted our supply of CFLs and it strikes me that I should consider things like the color spectrum when selecting these bulbs as I'd like the lighting in our home to be consistent and not harsh.

Michael Thompson

Wow! That really is a notable difference! How awesome is it that you got 'em to try out, Clive! As always thanks for sharing!

Michael Thompson

Zombie flesh hand :)

Phil Collins

Excellent thanks. I have 2 of these at home

Justin Coles

I believe the term for the view when you tossed all the red &amp; yellow stuff on the bench is LURID...

Scott Miller

You should run a giveaway if your old benchtop LEDs

blakethepatton

I've not got a suitable device for viewing the emitted spectrum here, however I did experiment with a pin hole aperture and CD and noted that the new LED did have a much more linear spectrum than the original LED which had gaps and a very non linear spectrum.

Big Clive

Did we forget a Patreon discount code? :-)

Pixscotland

You should get a prism and conduct some tests

btSchmieds

"the color is much richer" Big Clive: audiophilie for your eyes.

Nicolas Raynaud

In the beginning it was quite difficult to get used to the Yuji light. Your left hand looked unnaturally pink and shiny. But when you set it up with both sides under the same light it now looks more natural. Have you tried any close up of circuit boards yet?

John Carr

I've seen a review of these by DIY Perks, they are truely amazing. Just waiting for the price to come down a bit though...

He almost looks human now!

Dustin

Love what the new LEDs do for your hands!