Beam Comparison - Headlamp

Close Proximity Mode Beam Diameter Comparison - Click on the images to compare at full size. These beam diameter images show the relative size of beam (how wide is the light beam) as well as the evenness of light provided. The best light beams an evenly lit flood of light, free of lens aberations. Keep in mind that beam photos like these may overstate the negatives of dimmer headlamps, since unlike the camera (which is kept at the same settings for all photos), your eyes will adjust to dimmer light and thus see better than is implied by the photos.

Side-by-Side Comparison


Rank #15 #11
Product
Awards     
Price $14.96 at Amazon$25.64 at Amazon
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Pros Lightweight, small size, excellent flood beam, great priceLightweight, small size, excellent flood lighting
Cons Too weak a beam for trail finding or distance viewingBelow average spot beam, disappointing low-mode battery life
Bottom Line Offers great close proximity lighting at a budget priceA good light, but caught in a no-mans land between better lights and cheaper lights
Weighted Metrics Black Diamond Astro Black Diamond Cosmo
Trail Finding - 35%
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Close Proximity - 20%
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Battery Life - 15%
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Weight - 15%
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Ease Of Use - 15%
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Product Specs Black Diamond Astro Black Diamond Cosmo
Measured Beam Distance 38 m 66 m
Claimed Distance 35 m 65 m
Measured High Mode Run-time (ANSI) 4.8 hrs 3.9 hrs
Claimed High Mode Run-time 20 hrs 45 hrs
Measured Low Mode Run-time 95 hrs 39 hrs
Claimed Low Mode Run-time 80 hrs 180 hrs
Measured Weight 3 oz, 86 g 3 oz, 86 g
Battery Type 3 AAA 3 AAA
Water Resistance IPX4 splash proof IPX8 waterproof beyond one meter
Manuf Claimed Lumens 150 lumens 200 lumens
Beam Type flood, dimmable flood/spot, dimmable
Red Light no yes
On Switch Lock yes yes