how many lumens does a 2d cell flashlight provide?
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Entropy
Enlightened
Re: how many lumens does a 2d cell flashlight prov
A BadBoy 400 is slightly more powerful than a stock Mag 2D with fresh batteries - I think the 1W white Luxeons are specced in the 18 lumen range. So I'd estimate the Mag 2D around 15 lumens or less. (Note: Mag has an alternate bulb available that is brighter I believe, and there may be other superbright 2D bulbs.)
A BadBoy 400 is slightly more powerful than a stock Mag 2D with fresh batteries - I think the 1W white Luxeons are specced in the 18 lumen range. So I'd estimate the Mag 2D around 15 lumens or less. (Note: Mag has an alternate bulb available that is brighter I believe, and there may be other superbright 2D bulbs.)
Re: how many lumens does a 2d cell flashlight prov
I see, what would be a nice baseline for reviews is using a 2d cell standard bulb flashlight (ie typical store 2d flashlight) and charting the different single/multi LED flashlights in comparison to the baseline. since most people have used a 2d flashlight it makes it easier to figure out what kind of illumination to expect since most of these flashlights are only sold over the internet and 17 lumens means nothing to me since I have know idea what to compare this to. Think of it like PC benchmarks where they chart all the different lights compared to a base system
I see, what would be a nice baseline for reviews is using a 2d cell standard bulb flashlight (ie typical store 2d flashlight) and charting the different single/multi LED flashlights in comparison to the baseline. since most people have used a 2d flashlight it makes it easier to figure out what kind of illumination to expect since most of these flashlights are only sold over the internet and 17 lumens means nothing to me since I have know idea what to compare this to. Think of it like PC benchmarks where they chart all the different lights compared to a base system
Quickbeam
Flashlight Enthusiast
Re: how many lumens does a 2d cell flashlight prov
http://thelightsite.cruxial.com/reviews/eveready_classic2d.htm
Here's a review of a standard 2-D light. It puts out about 1000 lux at it's "hotspot" beam center.
LED light outputs can be found on this chart:
http://thelightsite.cruxial.com/reviews/lux_charts.htm
Remember, though, this is LUX, not Lumens. That means that we are sampling the light at the brightest point in the beam and tells you nothing about how fast the light output drops off as you go further from the beam center or the total light output. Explanation here:
http://thelightsite.cruxial.com/qa.htm#lumens
As you can see, the topic gets very complex very fast. For what you are looking for you would need to measure brightness and dropoff of light from center at various distances. Very few people have the very expensive equipment needed to do this type of measurement.
Even Lumen measurements can be very deceiving. Lets say I have 2 lights that put out 15 lumens total light each. One has a very tight focused beam and one a medium beam. The tightly focused beam will appear brighter even though total light output is the same because all of it's light is concentrated into a small area.
Hope this helps.
http://thelightsite.cruxial.com/reviews/eveready_classic2d.htm
Here's a review of a standard 2-D light. It puts out about 1000 lux at it's "hotspot" beam center.
LED light outputs can be found on this chart:
http://thelightsite.cruxial.com/reviews/lux_charts.htm
Remember, though, this is LUX, not Lumens. That means that we are sampling the light at the brightest point in the beam and tells you nothing about how fast the light output drops off as you go further from the beam center or the total light output. Explanation here:
http://thelightsite.cruxial.com/qa.htm#lumens
As you can see, the topic gets very complex very fast. For what you are looking for you would need to measure brightness and dropoff of light from center at various distances. Very few people have the very expensive equipment needed to do this type of measurement.
Even Lumen measurements can be very deceiving. Lets say I have 2 lights that put out 15 lumens total light each. One has a very tight focused beam and one a medium beam. The tightly focused beam will appear brighter even though total light output is the same because all of it's light is concentrated into a small area.
Hope this helps.
