Interesting, thanks. If you have the Duv reading, that would be interesting too.
That BR30 Reavel HD+ bulb looks remarkably like the Hyperikon A19: (Duv=–0.0009)
Here’s a Hyperikon BR30, but in 4000k because that’s all I have: (Duv=–0.0016)
I measured a half a dozen GE Reveal bulbs before and they usually have a DUV of –0.0035 or lower and R9 of at least 50. They have the best tint I’ve seen but they burn out the quickest. I’ve had so many died within days or weeks.
Thanks SKV89, I know you have been on quite the search for LED strip. I was wondering what bulb you like these days?
As a side note, I switched the title of the thread to Discussion so we can all throw positive suggestions into the ring.
Oof, way too tinted for my taste. But some people like maximum rosy tint.
You know, in general I can see tint pretty well, but in this case it is actually quite pleasant. I believe it is due the fact that it is the dominant light source in the room by far. Kinda like how we do not see the sun’s tint.
There’s also the fact that there seems to be less perceivable tinting when it comes to lower temps, instead of green white purple it is yellow yellow orange.
I did the whole house in GE reveal HD+ and have lost 2 or 3 bulbs in as many years. No complaints about their life span from me.
I did GE Reveal HD+ at my bedroom. Everything is great except it flickers sometimes for whatever reasons (it was in a rented apartment) so I switched back to incandescent.
Any recommendations for bulbs for taking pictures of canvas paintings?
Sunlike for sure.
I would probably take the painting outdoors on a sunny day, face it mostly toward the sun, and put a white foam-board from the dollar store behind it to make photo editing easier. Then erase everything from the photo except the painting. Bingo, perfect lighting and an Amazon-like photo.
The Reveal is still my favorite due to the low duv. Whites appear whiter. However the R9 could improve a bit and GE could really improve their reliability. From my experience, it is the most unreliable LED light bulb I’ve used.
I knew you liked low duv, but I’m surprised you describe whites as whiter, instead of rosier. Using staticx57’s data for that bulb, the Reveal HD+ is further below the BBL line than anything I have ever seen on the consumer market.
That’s how GE advertises their Reveal line and I can confirm it is true. Negative DUV does make white appear whiter at warm CCT.
Reveal® HD+ filters out dulling yellow light to give you incredible color contrast and whiter whites for exceptional clarity
Interesting. Though their high R10 (yellow) reading seems to disagree with their marketing department’s explanation. But I trust you more, so if you can elaborate, I’m interested.
Give this presentation about light chromacity preference and color rendering preference. a read.
There is one paper cited about perceived white point specifically, and two about preference.
Also you seem to (?) conflate light chromacity and color rendering, a light that render yellows well doens’t mean it’s yellow tinted.
I didn’t know there were manufacturers that actually marketed ”less yellow” lightbulbs, this is great, do you know of other brands that also do this ? I’m afraid GE isn’t a thing in Europe.
Even before I had the GE Reveal bulbs, I noticed how much nicer white looks with negative DUV lights. I had a 1x2000k mixed w/ 3x3000k E21A –0.007 duv and I was surprised how un yellow it looked. Compared with other 3000k above the bbl lights, the E21A rendered colors much more natural and whites appear whiter. Since then, negative duv was a must for me when it comes to warm temps.
Here are some pics I found online on the GE reveal though it is exaggerated, it is kind of like the difference I see.
Ha, those pics remind me of the horrible yellowish-tan our house was painted with when we bought it. We had the whole thing repainted to get rid of the yellow.
Interesting stuff. I’m going to make a low-duv bulb today and do some A-B testing later.
Alright, I took my bathroom light and adjusted it with Green Delete. It was 2525k Duv –0.0004 and I had no complaints. I coated it until I reached 2525k Duv –0.0077 to match what we were talking about. There was no doubt it became way too rosy, and whites did not look whiter, they looked rosy. I left it like this for quite a while, and stayed in the bathroom with the door shut to see if my perception changed. My shock dulled, but it was still rosy.
Then I washed off most of the coating until I was at 2525k Duv –0.0020. I can still pickup on the rosy, but perhaps I can get onboard with the whites being more white on the countertop. The ceiling is white in the bathroom, and looking at the ceiling made it more obvious there was still a rosy tint. There is a chance –0.0010 could incorporate the best of both. I will test that next.