Hopefully after having gone through some of the basic specifications of a flashlight it will help you make a better informed choice when deciding on what flashlight to buy.įor indoor use in a tactical situation I’d suggest looking at flashlights around 500 lumen output. Outdoor use such as hiking you may want to consider a higher candela flashlight with a more focused beam. Peak Beam Intensityįor indoor use its best to choose a lower intensity beam with a graduated flood. If we take the indoor scenario again from above then an output of around 500 lumens is going to provide around 1500 candela at 30 metres which is ideal for most indoor use. So as a rule of thumb you take the maximum beam distance and halve it.įor example, if you’re indoors and the longest corridor in the building is 30 metres then you’ll need a flashlight with a 60 metre maximum beam distance and around 1500 candela. In certain practical applications full moonlight isn’t going to be enough illumination. The beam distance indicated in the table is the maximum distance that is illuminated at 0.25 lux or full moonlight. Taking the 3 specifications directly from the FL1 table helps to make an informed decision on what type of flashlight is ideal for your intended application. For this particular article we’re more interested in lumens (light output) and Candela (Peak Beam Intensity) or brightness, plus the beam distance. The FL1 Standard helps to provide a better understanding of all the technical details of a particular flashlight and how they have a direct impact on performance in specific practical applications. You will see an FL1 table with it’s various icons on most quality flashlight manufacturers packaging. In 2009 the FL1 Standard was introduced as a standard at which flashlights are now rated. The FL1 Standard helps with this understanding. In summary, using both lumens and candela units of measurement together helps pinpoint what type of application a flashlight is most suited. Whether it’s main purpose is for tactical, hiking, search and rescue or as general outdoor / indoor flashlight. It is the brightness of a flashlight beam or Candela that must also be considered when deciding what purpose a flashlight is good for. The optics and reflector used at the front end of a flashlight also have a direct affect on how the lumen output is distributed. Optics used at the front end of the flashlight.Ĭandela rating determines the brightness of the beam at its most intense point.Candela (cd) rating – Measure of brightness / luminous intensity centre of the beam.The reasons why these 2 flashlights with identical lumens have varying brightness is down to a number of factors: If you were to choose 2 different flashlights, each with 1000 lumen output, you may find that both have different brightnesses at various distances. USB Type-C Charging: Fully charges in about 1.Lumens are the measurement of the total flashlight output, they are not a measurement of the brightness.Up to 200 hours of light on a single charge.Intelligent Overheat Protection: Regulates output levels automatically to prevent surface temperatures of above 140° Fahrenheit.
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