Sofirn IF25 USB-C 2500lm Variable Temempeture 2700K-6500K quad led

What’s the point of Moonlight being memorized when a press and hold starts from moonlight like NarsilM

Turbo on 6500K is 1650 at 30 sec. That’s a long way from their claimed 2,300. Very annyoing

910 at 2700K

Please tell me how to switch between mode 1 and mode 2 (ramp).
In the manual it says that from on (on) quadruple click.

but this way I don’t change modes.

Thank you very much.

Swapped 6500K leds with 219C 5700K from Simon at Convoy. The mix is actually not that bad at all despite the difference in die size. Definitely not as bad as I anticipated. At mid cct mix I notice a higher CCT tint shift around the hotspot but only on white wall and not noticeable in real use. Also, I just realized that the optics is not the same as Carclo 106xx series so could not try with the carclos I have.

Overall, I like it better. High cri all throughout the CCT range, less tint shift when changing brightness, and most important, no more green at higher CCTs. Downsides would be upper CCT only up to 5700K vs 6500K and less throw overall.

Some beam photos below vs PL47G2 sst20 FA3?. WB ~5500K.

@~2700K

@~4000K

@~5700K

Thanks for the pictures. Looks much better than the greenish SST-20 6500k.

Barry mentioned that Sofirnlight.com allows picking customized emitter options so I was hoping to buy some Sofirn lights with some mixed tint emitters like this. However, after PM and emails on how to purchase, I get no replies for about a month already. Oh well, I will wait until after CNY.

Waiting after CNY would be a good idea. Barry was very responsive with my request. I requested IF25 driver and MCPCB along with SP14 driver and he made it available in the website. I don’t think it has been shipped yet though because of CNY. I think BLF people might have flooded him with requests too.

I ordered one and just got it today. I really like it... takes some fooling with it and I had to RTFM. Tint ramping works! Lesser lights are now obsolete. Nice, hefty, solid build. Semi-gloss without looking cheap. Heat sinking must be good-gets hot very, very fast.

I'd love to see an SP36 size version of this with 6 emitters, 3 cool, 3 warm. Two switches-one for normal light operation and a dedicated one for tint ramping. Sofirn, are you listening?

how much amps is it on high??

Today I take some measurements on tailcap of my IF25. Results are:
Moon - 5 mA
Low - 100 mA
Med 1 - 237 mA
Med 2 - 740 mA
High - 2.45 A
Turbo 7.2-7.3 A

Battery is fresh charged Samsung INR21700-40T.

Can you post some images of IF25 driver when you received. I am interesting to view is that some sort of linear or switch mode driver. It is interesting because in ramping mode I measured between 5-7.4A on high. It is interesting to view is that trully 2 channell CC driver or PWM.

Some measures and dissasembles were here
http://forum.fonarevka.ru/showthread.php?p=1244768#post1244768

Thanks for the link :+1:

Thanks for the link, even with Google Translate the review was a good read! There’s some fun literary imagery in there too, haha - my favourite being:

Unfortunatly this flashlight left more questions, that give answers.
It could be cheap (but MSRP price outrageous).

But, any way

1) Cold mode unpleasant because of greenish tint of 6500 SST20.
2) Warm mode is very weak.

Generally, all color modes are weak even in comparison with EDC18 SST20/4000, in turbo. I c’t understand how did they measure lumens from specification.

3) Proprietary UI, when Anduril could be used. What for cool 2700k light if no candle mode )))
4) some reviewers calls it floody, but EDC18 even with SST20 is floodier
5) Still there are no factory diffusers. In combination with Anduril Interface this could be beautiful camping lantern because of color shift and 21700 power.
6) USB plug looks like unreliable, so i am sure that after 10-20-30 usages it would be torn off
7) When flashlight is on charging - only one mode available. Not very dimm and mo very powerful - unknown reasons, why i could have ~300 lumens during charge and can not have 50?

So, if this would be my first flashlight i will be very happy, but now all this issues makes me very uncomfortable

I dislike Anduril and so do the majority of my customers, they’d far rather not use Anduril that has a bazillion functions. Sofirn’s main audience is the general market.

The LT1 Mini is being built using the IF25 so get that if you want a diffuser with Anduril. I agree though it would be nice to have it.

Regarding the USB flap, don’t pull it up, rotate it to the side. I do this for every flashlight

I never use a flashlight on charge but it’s not 300 lumens. On 2700K it’s 77 lumens and balanced it’s 114. Not far off your 50. If you want less then place something over the front.

Interesting. Basic operation of Anduril comes down to the ramping operation, or modes, but I assume ramping would most likely be used. Is it any aspect of ramping that is not liked with Anduril? Is ramping operation itself too complicated?

The basic design of ramping operation goes back to the Q8 project, maybe further back, where we got a lot of input from various BLF members at the time, and incorporated their ideas.

The basic criteria/requirements were:

  • quick method to turn it on to previous brightness level
  • quick method to set the lowest setting
  • quick method to set the highest setting
  • easy way to adjust the level once on

The rest of the UI is advanced features and configuration. I think the problems could be reduced by:

  • configuration - pre-configure the light the customer orders to their needs
  • simplify the user manual - separate basic operation from advanced and configurations, and make it clear how simply the light can be operated just by knowing ramping operations

Hi Tom,

I would like to correct my comment.

I love Anduril personally but dislike that my customers find it overwhelming.

Smooth and Stepped Ramping is great as is. I think the most welcomed change would be altering the config to a higher number of clicks. NarsilM was hold for 16s which was great because no one is going to accidentally get into it.

Having to specifically say don’t do 4 clicks otherwise you can mess up the settings can put a potential buyer off.

Please add being able to disable thermal step down too. A lot of users including myself like to have control over it, especially on certain lights. NarsilM was great being able to disable it without messing with the thermal setting if enabled again.

I’d love to see a Muggle mode where full brightness can be reached (even full ramp) with all extra functions disabled. I’d then ship it out on that setting.

I have messaged ToyKeeper, who agrees, about changing the config but it seems many users don’t want to have two different UI’s across new and old lights.

I appreciate your reply

I can understand accidental multi-click activations, true. With NarsilM, I tried to make the hold time way more than worse case in usage which is 2.5 to 3 secs for full ramping.

Disabling thermal config would be nice - I'll be adding that to my next Anduril build, should be easy to do. Changing the 4 clicks to 16 sec hold is also do-able, not sure how easy.

That sounds great.

You could just change the config to a higher number of clicks if that’s easier.

And that’s why they make so strange UI with different logic on ramping and stepped mode? Good Joke.

This idea is fully shit. Lantern like LT1 is good when you storage it at home, or drive in car. You can allow yourself have so heavy designated flashlight for camping and only for camping.
But when you going with backpack for some days, you can’t have 5 flashlight for each pattern of use.
More, in tourist use, camping flashlight shoud be more stable - not so long and unstable construction like IF25+large diffuser. So this is stupid idea - to make LT1 Mini like IF25 with stationary diffuser. In field conditions there are not flat tables, for “kerosene lamp”

Thank you, i will try, but the idea like in Astrolux HL01 looks like brilliant.

So the main question is - why on other flashlights i can use different modes and here only one. Powerful enough.
And if i want to have moonlight at night when i charge - i should wrap in a towel and lost some power in nowhere?

In 6500k and low currents light is awfull greenish. And with more warm color flash light lost it’s power at all.

I have this night in comparing it with different lights and very dissapointed.

Of course, if it’s the only light, it’s good. But….

What’s the issue? It’s no different to all other Sofirn lights that use Stepped modes and Ramping. If Stepped modes is so horrible then use Smooth Ramping. The UI is excellent in Ramping.

Single click- On/Off
Hold - Increase/decrease brightness
Click, Hold - Tint Ramping
Click, Click, Click - Strobe

Where’s the problem?

The LT1 Mini is planning to have a removable diffuser so it can be used as a lantern and a flashlight. You might want to have a read of the thread.

If you want a diffuser for the IF25 then do a simple search after measuring the diameter of the head - Page Not Found - Aliexpress.com

Purchase another flashlight that suits your needs or get a diffuser cap. Search for one or make one

I have been using this for a while now, so I would like to share some of my thoughts.

This light has many pros, the best thing about it is probably its selling point, a tint ramping flashlight. If you normally use your light at lower colour temperature (within orange-ish or yellowish tint) I highly recommend it.

However, if you also use white light, this is when it might start to annoy you because the tint is annoyingly green at low modes as D’Averk mentioned. From my estimation, just from nearly 5000k and up the tint will start to go very green.

Some other gripes are as follows,

- The brightness ramping mode is not smooth. If you have used Anduril light before this might also annoy you. I have used some other Sofirn models like C8F and have tried a SP36 and their brightness ramping were smoother than the IF25s.

  • The button is firm, which is good in terms of it is less likely to be inadvertently turned on in your bag or pocket. But when I want to switch between step mode and ramping mode, which requires 4 clicks, I occasionally end up hitting the strop mode (by clicking 3 times). If you are holding a light in a pen-holding gesture and you would like to switch the mode, I find this very difficult to do with my index finger.

The only reason that I’m still keeping this light is because it is lovely when you use it as a lantern as you don’t see the greenish tint and being able to change the colour temperature is really something. I am eagerly waiting to see how the LT1-mini will be. It will be lovely if white light is not green and the diffuser can be removed.