Detailed written review of the Acebeam TAC 2AA with Luminus SFT-25R HI 6500K LED with photos and outdoor beam shots.
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Nice review!
A constant frequency Strobe accessible by the tail switch would be nice.
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Thanks for the review. But, are those duv numbers correct? I don’t recall seeing numbers that high anywhere else on the SFT25R.
I’m not too surprised, the SFT25R in Wurkkos TS10 SG also measured a comparable level of green. And the green does show up very well in the review photos.
This is a HI version, maybe other numbers were from the HD version? The numbers are absolutely correct and my testing always closely correlates with other reviewers testing.
The green in the profile beamshot was even more green in the original photo taken (auto white balance) and I had to give it +16 magenta shift in Lightroom to match what my eyes were seeing. I think the vast majority of non-flashlight enthusiast buyers would however not be concerned with the CRI and tint, but flashlight enthusiasts will question it. Tint is also less of an issue if there are no other light sources around as our eyes/brain auto white balance, but as soon as you are near other light sources, then +ve DUVs are noticeable.
The throw is very impressive though!
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From your review, I tested the step-down with a thermal camera on my blue sft-25r. An Acebeam CS reprensative told be via Aliexpress messenger that the step-down is thermally controlled and should step down at “about 55℃”.
After 3 minutes 45 seconds the light head reached 58℃ and step-down occured after 5 minutes when the head reached 61.8℃. This is very toasty.
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Thanks. Sounds like your testing has validated my more crude testing, and that I was right to publish my review as the issue will be occurring in multiple lights. This issue caused the Acebeam rep to be abusive (more detail on Reddit), to the point that I will now refuse to review their lights.
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Acebeam advertises that this light holds 800 lumens for 3 hours. This sounds like a big lie to me.
But why is Acebeam doing this??? One of the few brands I used to trust.
Probably just a mistake…
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They dropped the ball on this one, but don’t want to admit it.
They may have meant 80lm for three hours.
It sells.
If you look at those graph it is done “by the book”, as deceptively as possible with varying scale to visually improve how things look etc.
Just look at how the graphs in marketing material visually compare to actual runtime testing…
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That graph makes me want to stab someone. Specifically, the person who made it, or the person who approved it to be part of the marketing. Deceptive as hell, and it doesn’t even need to be. Acebeam generally makes good products.
Looks like they removed that graph. Wow, it was fast!
Thanks for the review; this SFT-25R is a horrible green monster. Glad I went with the “TN 6500k HD LED” version of this light, which has a more floodly 6500k white-light beam. 1500 lm 195m ANSI throw with Liion, 600 lm w/ Nimh, and 400 lm w/ alkaline.
The TN LED version only comes in green color. It is a very pretty light, permanently on sale on Amazon.
It certainly has the worst tint of any SFT-25R light I’ve tested. Maybe I lost the tint lottery? Anyway, I’m done with Acebeam after the disgraceful way I was treated by Acebeam Bella. I also no longer trust any review of Acebeam lights as I know how they try to manipulate reviewers.
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Oh I see - not all SFT-25R you’ve seen is this horribly green? I was going to buy Convoy T6 with SFT-25R 5000k and vaguely remember reading somewhere Convoy’s version is not that green. I have to read more reviews carefully.
The other thing I noted from your review is the CCT of ~5600k, a bit large deviation from 6500k spec.
I’ve been debating the Convoy T6 myself the past couple weeks. It’s cool they give you various options, especially for a light at that price. Im just not seeing it replacing or doing any better than other similar lights I already have. May be one of those late night purchases, after a couple beers!
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I’ve got 4 samples of SFT25R 5000K form Convoy, and their integrated tint is excellent, duv at medium modes are on par with 519A, and gets rosier from there, with only slight green at low modes.
The issue is the qualifier “integrated”: with proper blending, the average tint is very good, but the tint varies a lot across the hotspot because the phosphor deposition is not uniform. Every sample I’ve had has a hotspot that is green and dark in the interior, and rosy and bright on the boundary. If you want a sample that minimizes this issue, you’d have to purchase a large batch and choose the best of them.
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Thank you. Any comment on SFT25R 6500k vs SFT40 6500k in Convoy T6 please? Am I right to expect in same T6 host they will have similar output, SFT25R more intense so throw a little further, SFT40 larger LES so larger hotspot?
If least green tint is my most important criteria, between these two LEDs, each at either 5000k or 6500k specs, any comment on which choice is “safest”? I am thinking SFT40 6500k. TIA