weklund
Enlightened
Received my EA8 .... "Green" tint .... I don't get it. What is up with Nitecore QC on these lights?
This photo is of the beam tint on level 2 @ 2 feet on white wall.
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I took my dog and my EA4W and EA8 out for a walk tonight. If I needed to see things 500 yards away, then the EA8 would be great. The beam on the EA8 is quite hot in the center and provides less usable spill than the EA4.
I do not share the common obsession with "long throw" lights. I wish there were some modern (CREE XM-L U2) lights out there with Orange Peel, lots of spill, and lots of battery life.
I will be returning the EA8.
Guys, tint comes from Cree, not Nitecore. Tint shifts at lower drive levels, as well. And it will always look funny if you pick the wrong CCT on your camera.
I own a EA4 CW for comparison. I am a proficient photographer and the color rendition in attached photo is accurate.
If I purchase a CW light, I want the tint to be white at all levels.
It just can't be. That is not how white LEDs perform when driven at constant current. This is one reason I prefer neutral-white LEDs, because the tint-shift seems more subtle to my eyes. I will briefly list the difficulties in claiming what 'white' is, or whether a photo accurately renders color. This is not meant to attack you, but to point out how difficult color comparison is, especially when computer screens are in the way. What gamma is your monitor set to? Mine? Are you on a CRT or an LED screen? LCD? What is your backlight type, and what compression was used to convert light into RGB? RGB into web RGB?
Further, what is 'white' tint? White is non-tinted light, by definition. However, the characteristics of 'white' itself change with brightness. And perception of white is another animal entirely. Other light sources, recent light sources, primary (This light) and secondary (All other light) source intensity also affect your perception of white. A constant-tint LED (PWM control) will appear to change tint as it decreases in output. A constant-current LED has a real tint shift as well.
Cree's tint bins are big enough to drive a truck through. I ordered and received four identical-bin, same-tint Cree cold-white XM-L LEDs. Driven in series (Identical-current) they have very different tints, especially below 100 mA. Not only do they start at a different tint, their tint shift was different. Maybe you got a lemon in one, but could easily have had it the other way around. I have a quite expensive light whose drive circuit is designed to minimize this shift. It uses some current control and high-rate PWM to reduce that effect, but it is still there.
What is the solution? You could try to ignore it. Your eyes adjust to almost any light source. You could buy neutral-white, reasonable-tint LEDs (5A, 5B, 3C, etc). You could wheedle a choice tint bin out of Nitecore. But with Cree's tint bins as they are, the really good ones are snapped up by fixed lighting, and the oddballs put in single-LED use. Like flashlights. The present market structure leads to this situation of notable tint and tint shift. Sorry about that.
I respect your opinion. As others have posted with the similar "Greenish" issue. Mine has a green tint despite computer screen setting, white balance, light source ie. incan, flourescent, tungsten etc. It is green. You can defend your opinion all you want ..... My light has a green tint.
I guess i'm not the only one that got a lemon. Sorry to hear about your green EA8. Talking with the seller, we reached a compromise and i ended up keeping mines even though it's green. Not too happy about it, but it's alright. Curious what you plan on doing with yours?
I respect your opinion. As others have posted with the similar "Greenish" issue. Mine has a green tint despite computer screen setting, white balance, light source ie. incan, flourescent, tungsten etc. It is green. You can defend your opinion all you want ..... My light has a green tint.
Weklund, AppleSnail has some good points but here's the way I see it. Others have been complaining of recent green tints. Small differences in screens are a valid thought but if you look at 5 or 10 different computer screens and it's green on every screen to everyone who views it, then it's sufficiently green to have a complaint. Olight recently went through this and still is, as far as I know.
You could probably quash any debate by posting 2 or 3 different pictures with other known, good tints, auto WB on. The camera will average it provided there's similar lumen output but that's usually pretty definitive.