Mine was broken...
I guess this review is a little biased. I got this thing, and the first time I tried to use it, I thought I couldnt figure it out. Next time I tried, I realized it was broken. I dont know anything about how these work, but something inside was loose and shaking around, and I could never see even half of what I should, and nothing was ever in focus.
Too bad - I was excited to try this out. But Backcountry is awesome and I returned it, so no big deal I suppose