Fenix P1 Versus L0P se on high.

EsthetiX

Enlightened
Joined
Nov 15, 2006
Messages
453
Location
Hawaii
I was wondering if anyone who owns both can give me a comparison. Is there much difference between a p1 and L0P Se on high? Sorry if there's already a thread like this, I couldnt find one.
 

moldyoldy

Flashlight Enthusiast
Joined
Sep 22, 2006
Messages
1,410
Location
Maybe Wisconsin, maybe near Nürnberg
Eh? Are you implying a light-level comparison? A Fenix P1 with listed as 55 lumens vs a Fenix L0P-SE with 30 lumens on high? no comparison, and confirmed by the usual white-wall shots. The primary advantage to the L0P-SE is 3 lighting levels and the AAA size. The P1 has only a single level. and is larger - uses the CR123 cell.
 

adirondackdestroyer

Flashlight Enthusiast
Joined
Oct 31, 2005
Messages
2,018
There is no real comparison. These two lights aren't very similar at all. The P1 is MUCH brighter! Has more throw and much brighter spill as well. The L0PSE does however have 3 levels of output and long runtime on the low level. Both are very nice lights and I highly suggest the L0PSE! If you want some real brightness check out the new P1D CE!
 

EsthetiX

Enlightened
Joined
Nov 15, 2006
Messages
453
Location
Hawaii
moldyoldy said:
Eh? Are you implying a light-level comparison? A Fenix P1 with listed as 55 lumens vs a Fenix L0P-SE with 30 lumens on high? no comparison, and confirmed by the usual white-wall shots. The primary advantage to the L0P-SE is 3 lighting levels and the AAA size. The P1 has only a single level. and is larger - uses the CR123 cell.

Well I ask because I just received my p1 and I can't tell any difference in brightness (P1 on new energizer cr123 too). Actually, it seems my l0P se is sliiiiiiiiightly brighter on high. Obviously p1 should run longer but I was expecting it to be a lot brighter than the LOP SE on high.

And yes I have a p1d-ce coming to me...
 
Last edited:

adirondackdestroyer

Flashlight Enthusiast
Joined
Oct 31, 2005
Messages
2,018
Not to be a jerk but you must either be blind, or you got a seriously messed up P1. The P1 is ALOT brighter than the L0PSE. The beam shouldn't even look similar.




EsthetiX said:
Well I ask because I just received my p1 and I can't tell any difference in brightness (P1 was on new energizer cr123 too). Obviously it runs longer but I was expecting it to be a lot brighter than the LOP SE on high.
 

EsthetiX

Enlightened
Joined
Nov 15, 2006
Messages
453
Location
Hawaii
adirondackdestroyer said:
Not to be a jerk but you must either be blind, or you got a seriously messed up P1. The P1 is ALOT brighter than the L0PSE. The beam shouldn't even look similar.

It must be messed up. With all honesty it is not any brighter. The beam looks different (less white) but its in NO way any brighter. I am exchanging it for another. I'm glad to hear that it should be alot brighter cuz I am not impressed :)
 

Curious_character

Flashlight Enthusiast
Joined
Nov 10, 2006
Messages
1,211
My standard P1 is nine times as bright as my L0P SE on high, measured. (My P1D CE is 2-1/2 times as bright as the standard P1.) That means that the P1 lights up something 90 feet away as brightly as the L0P does 30 feet away, and the P1D CE will produce that brightness at 140 feet.

c_c
 

ledvador

Newly Enlightened
Joined
Oct 11, 2004
Messages
88
Location
blue withe red
EsthetiX said:
I wonder what's wrong with this p1 then..?? I know its not batterys.

May be it's your L0P-SE is wrong... it's brighter than usual. Maybe you are a Luxeon lottery winner or it's the wrong led in it... a U bin led probably.
 

EsthetiX

Enlightened
Joined
Nov 15, 2006
Messages
453
Location
Hawaii
ledvador said:
May be it's your L0P-SE is wrong... it's brighter than usual. Maybe you are a Luxeon lottery winner or it's the wrong led in it... a U bin led probably.

Never thought of that! I dunno though.. It is bright but not like SUPER BRIGHT like most people say their P1 is. Actually I just compared the my P1 to my streamlight key-mate (on fresh button cells) and they look VERY similar. They both light up the room with almost identical efficiency. Definately has to be some problem with this P1. I've already arranged for it to be exchanged.
 
Last edited:

InfidelCastro

Banned
Joined
Jun 23, 2003
Messages
2,266
Location
USA
Curious_character said:
My standard P1 is nine times as bright as my L0P SE on high, measured. (My P1D CE is 2-1/2 times as bright as the standard P1.) That means that the P1 lights up something 90 feet away as brightly as the L0P does 30 feet away, and the P1D CE will produce that brightness at 140 feet.

c_c



Throw and brightness are two different things.
 

Frenchyled

Flashaholic*
Joined
May 21, 2002
Messages
2,300
Location
Land of Cheese, Frogs and wine
P1D CE received today !! Thanks Foursevens !!!
My measure tell me that the P1D CE is twice as bright as the P1 on high level :

P1 : 1000 Lux
P1DCE : 2000 Lux

Not sure if my luxmeter is good.(read values).. but for comparison it's ok :)
 

Curious_character

Flashlight Enthusiast
Joined
Nov 10, 2006
Messages
1,211
InfidelCastro said:
Throw and brightness are two different things.
Ah, great, someone who understands these terms. Hopefully you can straighten me out.

I understand that the total light output, or luminous flux, from a light is measured in lumens. Ok so far. The luminous intensity is in candelas, which can be different for each angle or direction but isn't a function of distance. And the illuminance or illumination at some distance and angle is measured in lux, which is a lumen per square meter. Ok so far, I've got those.

The problem is with "brightness" and "throw". I don't see either of those on the sites talking about light. So I've been using "brightness" to describe, well, how bright a beam is -- that is, if my eyes smart and I have to put my sunglasses on to look at it, I say, wow, that's bright. If I took a flashlight and blurred its focus so that it's putting out the same overall amount of light but in a much broader beam, I'd say that the beam isn't as bright as before. My lux meter tells me that the illumination (lux) is less at the same distance, I can't see as far away, and I can take off my sunglasses.

But I guess that's wrong. Are you saying that it's just as bright as before because the luminous flux (lumens) hasn't changed? Hm. Ok.

Now in Flashlight Reviews, the reviewer calls the square root of the lux at one meter (which is the square root of the luminous intensity or candelas) "throw". That makes sense to me -- it's a distance, the distance at which the light casts an illumination of one lux.

What I measure is the illumination in candelas, or lux at one meter at the brightest part of the beam -- woops, no, the part of the beam providing the maximum luminous intensity. The "throw", as used by the FR reviewer, is the square root of that. So I'm measuring the square of the throw.

So is "brightness" the total luminous flux? When I defocus a light to convert a bright, woops, higher illumination beam into a dimmer, woops again, lower illumination beam, it's just as "bright" as before, even if I can take off my shades and quit squinting to look at it?

And is the FR fellow correct in his use of "throw" as the square root of the luminous intensity at the brightest part of the beam, woops, the part of the beam where the luminous intensity is maximum?

When I said my P1 was 9 times as bright as the L0P SE, I meant that its luminous intensity was 9 times as great, and that it has 3 times the throw. I'd guess that the "brightness" -- total lumen output -- is more like a 3 to one ratio, since the L0P SE has about twice the main beam diameter as the P1 but less spill. Hope that's clearer.

Thanks, I'm a real newbie at this, and have a lot to learn.

c_c
 

AilSnail

Flashlight Enthusiast
Joined
Jul 11, 2003
Messages
1,299
Location
Bergen, No
Curious Character, I agree with you on the definition of brightness, but I have been a bit careful about using the word without a solid context.
It appears as wikipedia agrees with you also, or not?
From wikipedia:
Brightness is an attribute of visual perception in which a source appears to emit a given amount of light. In other words, brightness is the perception elicited by the luminance of a visual target.
 
Last edited:

Flying Turtle

Flashaholic
Joined
Jan 28, 2003
Messages
6,509
Location
Apex, NC
For comparing "overall output", as in flashlightreviews, I regularly use the "ceiling bounce" technique. Just get in a dark room and turn on two lights you want to compare. Stick one on top of your head, aimed at the ceiling, and cover the other. Look straight ahead. Now quickly switch the lights. It's pretty easy to make a judgement.

Geoff
 

Curious_character

Flashlight Enthusiast
Joined
Nov 10, 2006
Messages
1,211
AilSnail said:
Curious Character, I agree with you on the definition of brightness, but I have been a bit careful about using the word without a solid context.
It appears as wikipedia agrees with you also, or not?
From wikipedia:
Hm, yes, that's how I've been using it -- thanks. If you use FR's definition of throw, which seems perfectly reasonable to me, then brightness and throw are different in that throw is proportional to the square root of brightness. When one is greater, the other is also, but they're related by that square relationship. Maybe that's what InfidelCastro meant by saying they're different. InfidelCastro?

c_c
 

Thujone

Flashlight Enthusiast
Joined
Oct 18, 2006
Messages
1,688
Location
Nebraska
Flying Turtle said:
For comparing "overall output", as in flashlightreviews, I regularly use the "ceiling bounce" technique. Just get in a dark room and turn on two lights you want to compare. Stick one on top of your head, aimed at the ceiling, and cover the other. Look straight ahead. Now quickly switch the lights. It's pretty easy to make a judgement.

Geoff

This is quite similar to my "tailstand light on counter and try to read a magazine on the crapper" technique :)
 

LowTEC

Enlightened
Joined
Nov 2, 2006
Messages
447
Location
Surrey
Thujone said:
This is quite similar to my "tailstand light on counter and try to read a magazine on the crapper" technique :)

:crackup: funny thing is, I do that sometimes just for the heck of it
 
Top