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Love the colors. There are few schemes sexier than orange + black + warm grey.
I get a sense of adventure and excitement when I see these, but I'm not sure what it is I'm excited for. The purpose is a little unclear to me in that regard. What is this logo/identity designed to represent? A service? A product?
Typefaces are too trendy for my taste. If I knew more about what this represented, it could alter that judgement. The taglines in general are much too small and/or constrained. I think a good, legible and clean typeface could do the trick nicely.
Lighting is smart, but dark. I love colors on dark, but I personally try to be very careful with contrast.
My favorite is the bottom selection within "voyagner2.png". I just wish it wasn't so dark and that I could read the tagline. What is the primary typeface in that design called?

Thanks Bart,
It is for an adventure travel blog and could later tie in with a travel company and expeditions. The typeface on the one you like is called slant, free on dafont. I like that one too but it also the one I think suits the purpose least.