thanks for sharing info
> big blue spike
where is that data, Im new to sorting LED options and dont see a spectrum on their site (yet)
They don’t publish the spectrum when it’s not as good, but here’s one https://www.waveformlighting.com/photometrics/TR_4005.30.pdf see it spiked to 40% vs the taobao one which is at 15%.
Oh yeah, if you don’t care about the blue spike you can get the high CRI bulb super cheap here Amazon.com
It’s 98 CRI BR30 and dimmable too.
thanks for the blue spike info on the 3000k Waveform (is that the filament bulb?)
fwiw, darksucks sells a filament bulb (that looks a lot like the 2700k Waveform)
the blue spike is lower than 40, but more than 30:
it is a 600 lumen equivalent
the photo grade lamp I got from them is 800 lumen…
> you can get the high CRI bulb super cheap here
excellent bulb!
850 Lumens is more than Im seeking…
Im looking for 400 lumens (hence my interest in the Waveform 2700k)
I think I see a dimmer in my future 
much appreciate all the info… Ive been confused about LED home lighting options for a long time…
Be careful, filament LED are known to flicker. I’m not sure I would trust that site.
Eg: Waveform’s filament flicker at almost 20% https://www.waveformlighting.com/photometrics/TR_4002.27.pdf
The more research I do, the more I realize incandescent/halogens are the perfect bulbs…
Also, if you don’t care about flicker! You can get top quality filament LED cheap from TCP
https://www.prolighting.com/fa19d4030e26scl95.html
I emailed them for R9 and 3000k at 70, 4000k at 91. (95+ CRI are typically 98 CRI)
> Be careful, filament LED are known to flicker. I’m not sure I would trust that site.
I do care about flicker… so… not sure what to do
my brain is swimming in a pool of variables
flicker
blue spike
R9
lumens
oh my!
it seems you already did the homework… I think I will just follow your advice…
tell me what to buy 
lol
do I need to buy a dimmer too?
> The more research I do, the more I realize incandescent/halogens are the perfect bulbs…
agree!
thanks for the reality check
to go back to incan
I could just change out some fixtures to be unenclosed and call it good
> You can get top quality filament LED cheap from TCP
thats a great price…
I avoided buying 3000K due to the R9 CRI being less than 80 (per your data)
I dont understand the flicker specs yet
Im reaching brain fog condition
too many variables to find data for, hidden in too many places to keep track of, yet
thanks for the coaching
I would just buy the Taobao one, which I did. God damn pricy though at around $30 a bulb shipped… Maybe try it on your phone?
Dimmer is another problem, most of the bulbs listed can not be used with dimmers. While some can buzz or flicker when dimmed.
thanks
on my phone taobao is all chinese to me
so… my wallet is safe lol
I like how CCT of Incandescent decrease with dimmeration.
But AC TRIAC dimmers must have noise filters, without them they introduce harmonics into the electrical network and noise around the room such as inaudible AM Radio .
I would like to try dimming from a 12V source a DC 5W / 21W car lamps with one of those black “30A :person_facepalming: ”dimmer knobs for strip Leds and see what happens. For sure there will not any flicker,the pwm frequency will be much higher than the 50HZ of AC
I got a new light meter,
Oppel Light Master
it measures CCT, CRI Ra, Tint, and Flicker… I dont understand it all yet, but…
been going through the rooms in my house, measuring the lighting
I already eliminated the Phillips hue when I saw the results…
the Home depot bulbs arent bad, but a bit low in CRI… the Waveform is better
Ecosmart soft white from home depot 60 watt 800 lumen
3200k 84 cri
===
2900K 96 cri waveform photograde
Phillips Hue
===
LED vs Incandescent:
.
it’s missing the most important spectrum view. anything that can display the spectrum seem to cost $1000…
true,
otoh, for the $35 this little toy costs… it gives a suprising amount of useful info
CCT, CRI Ra, Tint, and Flicker
but, no CRI R9
it does have a fun spectrum visual:
and by inputting the X-Y values into an online DUV calculator, I can get Tint info, and pretty colors, along w CCT info…:
though Oppel lacks detail and gives no separate R1 - R15 color bars… Im finding it extremely useful.
youre right that R9 CRI data costs extra
otoh, I now have a MUCH better idea when comparing light sources in my home… the Flicker data is very informing. Im finding a couple of the LED lights in my house have CRI Ra of about 80… that was helpful, and leads me to choose waveform instead of homedepot… for the least flickery, highest CRI option…
Im waiting for Waveform to restock the 2700k 40w filament bulb
I want to test the Tint… I returned the 3000k due to green Tint, even before I had the handy Opple to measure flicker…
Btw, this one should be just as good if not better (CRI 98)than the waveform one, and a lot cheaper. It’s BR30 instead though.
850 lumens for $25 is more than I need, but thanks for the link
I have and like this 650 lumens for $18 option from waveform
Next Im considering the 400 lumens for $10 pricepoint at waveform
meanwhile, I was about to order the Darksucks 400 lumen filament bulb
it looks good, but I cancelled when I saw the shipping cost…
much appreciate your help sorting options… im working my way through my sticker shock… price resistance…
Cri 80 
1800k pink glass bulb
https://www.amazon.co.uk/Philips-Classic-Dimmable-Light-Edison/dp/B08K2ZQ629
“Cri 92” 1800k strip
Cri 90 2000k strip from Gree
http://www.aliexpress.com/item/32858633850.html
Remember that the cheap and best artificial circadian lights flicker free is still a dimmed DC incandescent bulb.
PublicLab has an inexpensive kit for inspecting spectra of light sources.
I bought the
2700k filament bulb from waveform
I like it… the tint is good, and there is no measureable flicker at all…they are on sale for 10 bucks per single light shipped, compare to darksucks version for $35 per two lights shipped
this is a composite of screen data from Opple Light Master… it is turning out to be really useful in choosing flicker free LED options
the only fault I can find with the LED bulb is it seems to my eyes to be less than 90 CRI R9… I find the output a good match for a 40w incan, and the color temp also… recommended
.
The opple light master is nice, but the cri numbers cannot be reliable. It only has 3 or 6 bands depending on the model. No substitute for a Hopocolor of Sekonic unfortunately. The cheapest option is a used xrite unit fed into ArgyllCMS.