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Infiltration Forums > Archived UE Tutorials, Lessons, and Useful Info > Streamlight ProPolymer 4AA Luxeon flashlight - Mag replacement (Viewed 3090 times)
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Re: Streamlight ProPolymer 4AA Luxeon flashlight - Mag replacement
<Reply # 60 on 10/16/2006 2:20 AM >
Posted on Forum: UER Forum
 
Upgrade kits for 2aa mags can be bought at canadian mec stores for 7! Mine is not brighter then my 3c mag light.


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Re: Streamlight ProPolymer 4AA Luxeon flashlight - Mag replacement
<Reply # 61 on 10/16/2006 3:55 AM >
Posted on Forum: UER Forum
 
First all, please realize the original post was made prior to the introduction of Minimag LED series lights.

Posted by Jarhead
I don't understand.

The Streamlight ProPolymer 4AA Luxeon has an overall output rating of a very whimpy 23.50. Overall output is the amount of light comming out the front.
http://www.flashli..._propolyluxeon.htm

However, the Fenix is producing 31.50 for overall output.

http://www.flashli.../fenix_l1t-l2t.htm

31.50/23.50= 1.34

That means it produces 34% more light.


I actaully found his result a little strange as the Minimag 2AA LED is listed as having more output than the SL 4AA PP Luxeon.

http://www.flashli...ite_minimagled.htm
It is listed as 27.3 or 16% more than SL 4AA PP Luxeon.

My testing actually showed the SL was BRIGHTER than the Minimag 2AA. I mentioned this either on CPF forums or the CPF chat and I've got varying responses. It was suggested that maybe he's got a weak SL PP 4AA or his light box instrument is not coping too well with a beam that concentrates too much on a small spot.

I use a different sensing method and a different means of diffusing the light, but the same idea. The light is bounced off of white walls, then captured with a sensor.

He used a milk carton and a light meter. I used a bathroom and a camera set to fixed exposure settings (ISO, time and aperture). His methodology is described in details here:
http://www.flashli...ightbox_output.htm

This is my result. Camera was set for ISO 100, F2.7 exposure 5 seconds

Minimag 2AA that is rated 27.3 on the same review site



Streamlight that is rated 23.5 on review site


The latter is supposedly less powerful, but clearly provides more exposure. I'm not really sure why, but if we just stick to flashlightreview.com's data for now..

The Minimag 2AA LED is 27.3, Fenix L2T is 31.5 and Minimag 3AA LED is 40


Plus the Fenix L2T is much smaller, such that it is easier to mouth carry if both hands are needed. I'd die laughing if I saw you mouth carrying a Streamlight ProPolymer 4AA...

Another advantage, is you can carry two spare cells in a pocket. I cannot tell you how many times I've had NiMH Energizer cells go out to lunch on me.


When I said the SL 4AA PP Luxeon is a good Mag replacement, it was meant to be compared to the 4D Mag xenon, but since they came up with the wonderful Minimag LED, I'll bring them back in.

These same advantages are not unique to Fenix L2T. The same advantage applies to Minimag 2AA LED, LiteFlux LF1 or the Huntlight 2AA but Mag is the cheapest to buy and is adequate for many people. Going by the review numbers, the Fenix L2T costing twice as much is 15% brighter than the Minimag 2AA, but applying the square law*, the perceived brightness is only 7.4% brighter, so who really cares?

*(Rea, Mark S., ed. The IESNA Handbook. 9th ed. New York: IESNA, 2000. 27-5.)

There's also the 3AA Minimag LED that's 27% brighter(based on FLR data) than the Fenix L2T and less than half the cost for those who could accept the additional length by the length of an AA battery.


Another nice thing is that flashlights with higher throw numbers and lower overall output numbers, have a brighter hotspot, which ruins your night vision even more. Think of it like blinding you. It also makes it harder for finding things.


The beam is adjustable on the Minimag LEDs The projection ability (throw) was probably tested with the focus set to tightest. The Fenix L2T doesn't have the ability to adjust, so the focus setting doesn't apply.


The Fenix L2P has a larger and less dramatic hotspot, which blinds you less, and helps you recognize things better at night. This is due to a more even, and uniform lighting field.


The head can be removed completely on the Minimag if desired to make a very smooth wide angle flood light. Do you happen to have a reference for the benefits you claim?




Infiltration Forums > Archived UE Tutorials, Lessons, and Useful Info > Streamlight ProPolymer 4AA Luxeon flashlight - Mag replacement (Viewed 3090 times)
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