BLF A6 3D wrong color temperature

Zero tint shift is impossible, besides the tint shift exist without any optic at all, reflectors, just have the LED in a room and see the rainbow of tints.
Low CRI and dual tint makes these LEDs completely useless if you want serious lighting.
These are not neutral they are yellowish greenish, etc. They are all over the place, we are not taking about imagined neutral or whatever manufacturer claims, they are not neutral as neutral goes.

So is a prefect circle or a perfect straight line.
That doesn’t mean we can’t want it or can’t get close enough.

Take the “3D” LED put in on the table turn it on and see the dual tint. simple as that.

5000K 219C has no context, just recommending stuff like that where quality is needed.
Can be low CRI, high CRI, even if it is high CRI can be greenish, or to have a tint, or it can have a large MacAdam ellipse.

You’re right, but i already said (like others before me) he wants high CRI.
The 5000K high CRI 219C LEDs i have / have seen are not greenish.
And yes, 219C has tint shift too.
So does the even better CRI E21.
Even the Optisolis has some tint shift.
So you want pebbled TIR optics to eliminate that to where you don’t notice it.

The only LED i know that has no noticeable tint shift of itself is the Osram Duris E5 0.5 Watt LED.
Not suitable for flashlights though.

The Wuben TO50R is excellent for being able to render proper colors. Photography was one of the design criteria

Ooh… Not a cheap light ! :open_mouth:
It’s nice though.
But i forgot about the LH351D.
Good option, but i wouldn’t know where to get 5000K ones at the moment.
[edit] Maybe the FW3A? [/edit]

Welcome to the forum.

Your realization that LEDs do not produce full spectrum light, is on track.

There are colors missing in LEDs that make them poor at simulating Sunlight, unless you seek out photography grade LEDs

a BLF A6 is not equipped with a photography grade LED, but it could be modified.

thanks for that link
maukka has the best LED color and tint info of anyone Ive seen. He also has some great light panels he uses for photography (maybe someone can post that link for pauldb to learn more about the differences between a cheap, low cri flashlight, and a photography grade light).

the LH351d tint lands above the BBL, as does sunlight tint

however, the R9 output of the LH351d, is not as good as some other LEDs…
here is an article about the importance of R9

The LH351d has green tint, and its Red Rendering is not as good as some other specialty LEDs, such as the E21a and 219b

here is a good photo to illustrate tint position… above the BBL in this case, aka positive Duv

and look at the R9 value (this is THE single most difficult color for an LED to produce, and “High CRI” does not address the factor of “High R9”… a LOT of High CRI LEDs are not High in Red output…)

Here is the 3d LED in your A6, note the negative R9
pic is a link to the review

Hi all,

Thanks a lot for taking the time to share your knowledge with me. I will study it in detail. I took a look at the Wuben TO50R and indeed it looks like the perfect light. But quite expensive and I would need two of them.
Now, I do not need perfect white balance but it should more or less approach sunlight or strobe color temperature. And I do not need extremely high output. Even 1000 lumen would be OK.

Would it be possible to modify the BLF A6’s? Can’t loose a lot by trying.

PS: If only using the two BLF A6 as a light source, I can correct the white balance of the raw images, no problem at all. But as explained I will use these flashlights also as an auxiliary light source (to lighten up shades for instance), mixed with daylight or strobes. Correcting that is nearly impossible.

Paul

I would assume, for photography and perhaps the occasional video recording, you want to avoid hmmm… just about every aspect of a light like the stock A6…
I mean, the cigar shape and all is probably fine, although it can get quite hot doing 1000 Lumen, because it has a small surface area.
But then again, for our eyes, the difference between 500 and 1000 Lumen is not that big.
For the rest, i’d say make a list of what you need it to be able to do and what it mustn’t do, and go from there.
FYI, TIR optics are available in various beam width angles, 30°, 45° and 60° being quite common.
There are also triple and quad TIR optics out there (for triple or quad LED boards), for if you need more Lumen.

Maybe get 2x Astrolux S41 with Nichia 219B or 219C, if they’re 5000K.
Those are quad LED lights, but have the same driver as your A6, but that can be swapped.
But at least you’ll have better LEDs than the LH351D, regarding the R9 values (red).
They’re not that expensive either.
You can find it here Archive topic - Banggood & Fin17 , along with a coupon code, for just over $20 a piece.
Under it you can find a 18650 battery tube for the S42 / S43, or look around on Banggood for the S41 18650 battery tube, but they will both fit.
But that way you can get 2 lights with 4x Nichia 219B 5000K for less than 50 bucks.
You can diffuse the beam with diffuser film if you want.
Anyway, that’s just an idea, it seems like a good starting point to me.

adjustable color temperature option:

I believe you will be seeking a high TLCI rating

TLCI?

OK after giving this some consideration, I think the better option would be to go for these small Lumecube 2.0 lights.

As said it is especially for macro photography. I needed something small (so no big led panels) and directional (I am not a fan of too diffuse light when shooting macro - I have a ring strobe and don’t like it) and reasonable autonomy and high output (to be able to shoot with small apertures).

It was a bit simple, thinking I could do this with a couple of cheap flashlights.

Thanks all for your valuable advice.

Paul

Whoa, that’s not cheap…
Maybe you should have a look at this then:

Jetbeam-FL-12-2835-LED-780Lumens-6Modes-Dual-Color-Light-HD-OLED-Screen-Flashlight-Fill-Light

links and coupons here:

You can buy 3 of those for the same money.

thanks for following up with what you ended up deciding to do
those look like great lights

I hope they work well for your application, and that you come back and share your impressions and a couple pics :slight_smile:

Merry Days!

OK I will keep you informed, I just ordered a Dual pack. But there are a lot of reviews and videos around about these lights.
There is an alternative that is nearly the same (Litra Torch) and a bit cheaper.
https://litra.com/products/litratorch-2-0

Both have pros and cons.

A third alternative is the Mirfak Moin. Costs only half as much but some user reviews I read, did not convince me.
https://www.mirfaklight.com/

Paul

The LED color information here and on the links is next level. I always wondered why some led colors look off. Especially in the reds.
Thanks.

Interesting thread. I just stumbled on it since the 3D I received seemed quite green. Still quite a deal, but definitely not as neutral as I’m used to. I’ll try it outside when it gets dark.