Why do you buy lights without High-CRI emitters?

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jon_slider
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sbslider wrote:
I would likely use the Manker more if it did not have the funky UI. I think when I first got it I liked it, but having to hold to turn off always throws me off now. I much prefer click off.

I also much prefer to click off. I hate the hold for off on my Utorch S1 Mini, but I tolerate it for other benefits over an Olight S Mini. The battery check flashes on the Utorch are very useful to me, the Olight minis do not have that. Also the Olights are tough to open, the Utorch bezel unscrews easily and the lens is Nichia friendly, the Olight Tirs are not.

If I could have an Olight with a 4000k Nichia, that would make a big difference, but I gave up on that, which is why the Utorch entered the scene.

I was also curious about the Utorch aspheric. I love it as an indoor headlamp. otoh It sucks for anything more than 10’ away. The Olights and Zebras are much better at that, due to the narrower beams. otoh, I felt the Olight sucked as a headlamp indoors.. courses for horses.

"High CRI Lights for Sale":https://budgetlightforum.com/node/75426

Majoroverkill
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ToyKeeper wrote:
For real though, sometimes CRI isn’t the most important factor. The BLF GT, for example. Or, to make something which looks more like a real candle, white light isn’t ideal. Or sometimes wide-spectrum is better than high CRI. Or sometimes even a normal medium-CRI light with good tint can look better than a high-CRI light — my XP-L HI 5000K triple with ~75 CRI looks nice, but a ZL SC64c does not.

CRI is a factor to optimize after other things are taken care of, since its visible effect is relatively small compared to things like color temperature, beam shape, and beam consistency.

I have bought a few high CRI lights, Emisars, to try and understand why people like them and still do not get it. It must be my eye sight because even with higher lumen output it feels like my eye’s are straining to focus and the dull yellow lighting gives me headaches. I prefer 5700k to 6000K. I use to get cluster migraines all through school from the florescent lighting all the time like 3 times a week, God was that hard times!!, and the high CRI has the same effect on me. I really like my Emisar lights but never use them. I really like the 5700K but it’s not a common temperature in emitters. I got one Emisar in 5000k but still see lots of yellow in the light. Then again maybe 25 years of welding has done its toll on my eyesight as well. I get optical migraines most of the time now when I weld.

Doug S.

Tally-ho
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Majoroverkill wrote:
I use to get cluster migraines all through school from the florescent lighting all the time like 3 times a week, God was that hard times!!, and the high CRI has the same effect on me.

It’s a bit odd and contradictory to mention high CRI as one source of your migraines, but I’m not you and maybe your migraines are induced by several factors, but :
- If high CRI induces migraines for you, daylight would be a problem, incandescent lighting would (have) be(en) also.
- Common fluorescent lighting rarely exceeds CRI70 but have constant flickering, particularly those without an electronic ballast. Retinal persistence makes it less obvious for you but your brain perceive it.
- I’m not a welder but depending on some welding techniques (arc, etc) there could be a lot of light flickering. Your welding goggles /mask attenuate the brightness, not the flickering I guess.

It seems that light flickering and some PWM frequencies (with flashlights) might be a problem for you, more than high CRI if daylight doesn’t induce migraine…but i’m not a doctor so take this with a grain of salt.

Majoroverkill
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Tally-ho wrote:
Majoroverkill wrote:
I use to get cluster migraines all through school from the florescent lighting all the time like 3 times a week, God was that hard times!!, and the high CRI has the same effect on me.

It’s a bit odd and contradictory to mention high CRI as one source of your migraines, but I’m not you and maybe your migraines are induced by several factors, but :
- If high CRI induces migraines for you, daylight would be a problem, incandescent lighting would (have) be(en) also.
- Common fluorescent lighting rarely exceeds CRI70 but have constant flickering, particularly those without an electronic ballast. Retinal persistence makes it less obvious for you but your brain perceive it.
- I’m not a welder but depending on some welding techniques (arc, etc) there could be a lot of light flickering. Your welding goggles /mask attenuate the brightness, not the flickering I guess.

It seems that light flickering and some PWM frequencies (with flashlights) might be a problem for you, more than high CRI if daylight doesn’t induce migraine…but i’m not a doctor so take this with a grain of salt.

I have to wear really dark sunglasses and still get them when driving from the reflection of sunlight off oncoming traffic windshields and glass. Its a problem I would not wish on anyone. There no where near as bad or frequent now that I am older but still happen a few times a month. If I accidently flash myself with a flashlight its instant auroras in the eyes followed by hell aka pain. I use to take an experimental drug, at the time, called Ergostat when I was around 12 and it worked great but I guess it was to dangerous for long term usage. Flickering light is like Kryptonite to me! I love welding and flashlights so its something I have to deal with. Grain of salt taken, thank you.

Doug S.

Unheard
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I’m undecided. I like the better color rendition, which can make a difference. But I cannot see the benefit in extreme flooders or throwers where the goal is to see as much as possible or as far as possible, respectively.

Happily ordered an Osram for my OTR i3 yesterday, but was amazed to catch the hour this morning where my 219B sw35 light matched the sunlight tint Love .

Smile, you cannot kill them all.

Lightbringer
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120Hz flickering from fluorescent tubes itself bothers me a bit, even where the fixtures would have those “honeycomb” grates that directed the light straight down, and you couldn’t see the bulb itself unless you were right under the fixture.

Those fixtures with coarse “ice-cube trays” where you could see parts of the nekkid bulb would bug me when in my peripheral vision.

Worst were the plain frosted plexiglass panels.

In the first case, indirect flickering light would “only” give me eye-fatigue after a few hours.

In the last two cases especially, sitting at my desk and seeing the nekkid flickering tubes in my peripheral vision would end up with me getting “eye-migraines”, where it’d feel like someone was driving icepicks into my eyes.

Immediately I climbed up and gave a half-twist to the tubes above my desk to turn ‘em off, and left a note inside the fixture to “LEAVE THESE DISCONNECTED”.

As for lights over other peoples’ cubes, I actually cut apart a big box and made myself an awning to shield myself from those lights, ‘til I was told to take it down (or it’d be done for me regardless). Said I had a problem with the lights, was told tough. Said no problem, I’d just call OSHA and see what they could recommend. Aha! Now they were willing to “work with me”, and asked around if this one or that would mind unplugging their overhead lights, and lots did! So it wasn’t only my issue…

Anyway, they (building owners) upgraded to LED fixtures, rather nice 4500K, but bare panels, no gratings. So I still have to go around wearing a baseball cap to have a personal awning at work.

Thank B’harni (pbuh!) I’m working from home these past few months along with everyone else, so I can bask in all-natural light all day long.

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