Since my Field Report the nighttime weather has warmed up considerably, and the effectiveness of the lantern has improved comparably, there is a definite correlation between the temperatures and the brightness of the Liberty Mantleless Lantern.

In warm, summer weather (above 60 F / 16 C) this lantern provides as much light as a single-mantle lantern, though directionally. By this I mean that the reflector shields direct the light towards the front, limiting the amount of light available towards the sides and rear. If you are sitting in front of the lantern there is sufficient light to read, cook, setup camp, play cards, etc. Once you move outside of a 45-50 degree arc the light drops off considerably, to the point where the matching rear arc is almost totally dark.

I found that the expected life of a canister of fuel is pretty much as stated on Brunton's literature: 6-6.5 hours in warm weather, up to an hour less as temperatures neared freezing. The problem that I did have was with finding fuel when out of the city, not all Iso/Butane canisters have the same fittings. As an example, Jet makes three fuel sizes for its systems (half-tank, 4 oz / 113 g, and double-tank); I thought this would work great, needing to take only the right size with me for the trip. Unfortunately, their mounting does not fit the Brunton's mount. As I tried different brands, some national some not, I found similar problems, from this I learned to check the fitting in the store whenever I came upon a new brand, and not to just go by the general appearance.

• I like the convenience of a matchless ignition system, without the loud bang I get in my matchless mantle lantern (gas buildup in the glass globe when the lantern doesn't light immediately). I've had glass globes crack, and even shatter, on me from the bang.
• Unlike a standard gas lantern, the Liberty Mantleless Lantern packs well, and I don't at all miss the excitement of guessing if I have to replace the mantle when I unpack, especially when I arrive after dark.
• Being, mainly, a solo backpacker, or having only one or two companions, I like the directionality of the lantern. I'm not lighting up the entire campsite, and not bothering others who may be in nearby campsites. Also, I find that I don't suffer from night blindness when I leave the area for a short night hike, although I'm not sure why that is.

• This is definately not a cold-weather lantern, which is when I do most of my camping. In my area, the cold weather is from mid-November thru mid-May - most of the year. I have had it suggested that I keep the fuel canister warm by wrapping it in a thermal pack while hiking (the type of soft-packs used for lunches and 6-packs of soft drinks), and then wrapping it in a small towel while in use to keep the fuel from getting cold. I haven't tried this, since it was suggested after the weather warmed up, but I will be giving it a try this winter.
• Fuel canisters are bulky, there is no way to know how much is left in a partial canister (though I have been using a marking pen to put a hash mark on for each hour of use), and an empty tank takes up space and adds weight.

• At about $4 US per 4 oz (113 g) canister of fuel (6 hrs of lighting), I'm not sure if this is an economical lighting solution or not. And with its limited useful season in my area of the world, I'm not sure if I would recommend the Brunton Liberty Mantleless Lantern for those who, like me, prefer cold-weather camping; for those south of me, or warm-weather campers, it would definitely make my "keepers" list.