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

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.

Huh, I’ve never had the issue of hitting strobe instead of mode change, are you certain you’re clicking fast enough?

I’m not someone that cares much about green or blue tints so this hasn’t been an issue for such a low price. It would be different if paying top dollar for a high end brand.

Sofirn mentioned they didn’t use Samsung leds due to a horrible beam pattern with artifacts so they had to use SST20’s.

I haven’t noticed this. Sofirn didn’t use Anduril because they believe it’s not simple enough for most people. There’s been a lot of reviews around on different sites of confusion.

Most people don’t want heaps of strobes and blinkies, they don’t care about configuring the settings, they want simple operation - on/off, mode change, single strobe. Sometimes that’s too much and they want a single mode.

Flashlaholics are really the only ones that want a ton of configurable options.

90% of my customers in New Zealand want simple operation as above. I have so much trouble selling Anduril, in fact I still have an SP36 with Anduril for 8 months now. The simple versions get taken and that one left.

I love Anduril and would happily have it on all my torches but I do agree that it’s probably not the best firmware for non-enthusiasts. Unfortunately, I’ve found Sofirn’s in-house firmware to be pretty bad - I don’t mind a simple UI, and I’ve even learned to live with hold-for-off, but the inconsistencies are infuriating.

I know it’s unlikely, but does anyone know whether the IF25 uses an ATtiny MCU so there’s some possibility of it running Anduril?

I hope the LT1 Mini runs Anduril (I haven’t kept up with the thread) so it’s UI is constant with the LT1, and there’s a possibility of using the driver in the IF25.


EDIT: It looks like the LT1 Mini will run Anduril :laughing:

Do you work for them? There are some real things, which looks like the quirks in best case, and fails in real meaning.

The real visible pwm, the low real output against declared, some awfull greenish tints in all light modes with cold leds, unknown reason of only one mode while charging (not even two - moonlight and one middle). Different UI in ramping mode and stepped mode. No diffuser from factory (diffuser for edc18, as example, could be bought separatly in ali for 2.5buks). No modern modes like candle.

But changeable color temp is extremely close for such usings…

They could made this fl more usable in any way, even for this money (as example, i bought edc18 on ali simply for 26buks), but you simply answer
“Nice fl,i like it, if you d’t like some issues - just shut up and go away”
Говоря по русски, у вас поведение “ссы в глаза - божья роса”.

And the last - if sofirn could produce ltmini which would use samsung led, anduril and could be used like hand flashlight, that means they simply cheating with if25 - all this words about awfull beamshots with samsung hicri leds.