[Review] E21A R9080 5000K

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Joshk
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That’s actually a really good idea! A small frosted piece could do the job up close. I need to find a piece. Thanks Big Smile

jon_slider
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Joshk wrote:
in the end the emitter’s behavior has been full explained.

I agree. The 700 mAh test seems to be typical for manufacturers to report, but not typical for your max lumens application needs..

Thanks for your time and efforts to acquire tools, take measurements, and share your results.
And Im always happy when variations in measurement protocols, or variations in use patterns, can be found to explain apparent discrepancies in results.

I look forward to more of your contributions.
If anything I say seems offensive, it is unintended.

ToyKeeper
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Joshk wrote:
Jon and TK expect me to reverse an unbiased review …

It sounds as if you’ve entirely missed the point of my comments here. I don’t expect you to reverse a review or anything of the sort. I was hoping that maybe you could stop inciting what you’ve described as “skirmishes”.

It’s not about the performance details of a particular emitter, or the measurements posted in a review. It’s about a pattern of aggressive social behavior across several threads.

The same pattern continued in today’s new thread about DC-Fix window film, opening the thread by firing a preemptive shot, daring jon_slider to argue with you. That’s pretty explicitly picking a fight.

Joshk wrote:
it’s a bit out of character for TK to join a skirmish

I don’t normally pay much attention, but when drama persists long enough I often hear about it. That’s what happened here — have been hearing about this saga for over a week now. It’s visible to the public and people elsewhere read it and talk about it, saying stuff like “Hey, Josh posted again. Better make more popcorn.” It has become enough of a spectacle that I hear chatter about it while I’m not even on BLF.

I hate to deny people their popcorn, but it would be nice if BLF got more attention for making cool stuff and less attention for making drama.

rngwn
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It’s also has quite a bit to do with a choice of words, and a degree of tact to express your thought, or to invite other people to join the discussion without turning people off in the process.

I learned that the hard way not too long ago (not here though), back when I was a little more feisty with my language of choice.

At the end of the day, I might end up discovering the same result, and deliver the same message. But there are words I would choose not to use for a written review, be the item from Banggood, Aliexpress, or well-known sellers.

 

Searching for High CRI leds since 2010...

 

Has finally gotten to the bottom after 10 years of delving deep into that rabbit hole of them high CRI lights...

 

High CRI, high quality lights doesn't need to be expensive, or is it?

 

Joshk
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jon_slider wrote:
Joshk wrote:
in the end the emitter’s behavior has been full explained.

I agree. The 700 mAh test seems to be typical for manufacturers to report, but not typical for your max lumens application needs..

Thanks for your time and efforts to acquire tools, take measurements, and share your results.
And Im always happy when variations in measurement protocols, or variations in use patterns, can be found to explain apparent discrepancies in results.

I look forward to more of your contributions.
If anything I say seems offensive, it is unintended.

Thumbs Up Peace. Let’s end on that note. I’m not interested in the direction TK is trying to take this.
zak.wilson
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For what it’s worth, Nichia’s datasheet, which Clemence links from his store, does chart the shift in chromaticity coordinate with varying current.

The way I see it, bare LEDs are not consumer products. As with other products intended for industrial use, they’re intended for expert users, and sellers might reasonably assume buyers are willing to take a risk buying a few units to see if it will work for their application. I say this having destroyed every E21A I’ve ever owned – most of them through user error.

I do think E21As behind a diffusion screen are likely a good fit for OP’s application.

Ceilingbounce – flashlight testing and runtime graphs for Android

ToyKeeper
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Thanks for editing the DC-Fix review to remove combative bits and add more detail about the test procedure. Thumbs Up

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