For 2 years now I've gone camping at a lake in NY with my BIL. Last night I was in Target getting school supplies for the kids when I see a Coleman 4 person tent with darkroom technology for $89.99. Now I've seen videos about these tents so I'm intrigued and with the trip coming up in 3 weeks I decide to go for it and get the tent.
Out of curiosity I set the tent up this AM in my basement to see just how legit these "darkroom" claims are and I can verify, it is extremely dark inside of this tent. My basement is well lit, with 2 windows and 10 directional canister lights (all pointed at the tent) and I can say, upon entering the tent and zipping it shut, it is almost pitch black. So dark, in fact, that you really can't see anything until you give your pupils time to adjust. Once the eyes adjust I would compare it to being outside at night with a full moon. Laying with my eyes shut it was exactly like laying in bed at night - pitch black.
Coleman claims that this tent blocks out 90% of the sunlight, while staying cooler than other conventional tents. I can't make any claims about staying cooler but I can say that this tent successfully blocks out light, with the most light leakage coming through the plastic zipper material, and through the mesh panels on the ceiling.
This weekend I'm going to set it up outside to see how it performs under real world conditions and to see if it becomes a steam bath like most tents.
If you're like me and get woken up by the slightest bit of sunlight regardless of how late you drunkenly collapsed into unconsciousness, and you don't need an expedition grade tent, maybe you would find the 'darkroom' technology beneficial.
I'll post more this weekend, after sleeping in it, if anyone is interested.