At high altitudes, the sun disappears earlier and appears later than at sea level. This question asks for how does light differs in such case but does not address the when. How can I calculate the ...
I do some high altitude (4-4.5k metres) trekking. At night this can lead to very low temperatures (down to -20oC). My choice of battery type for my camera is lithium ion, or rechargeable lithium ion. ...
This summer I'll be attempting to get to the top of Kilimanjaro. I'm bringing my Olympus E-30 and a couple of lenses. The instructions I've received mentions that you should check the height range ...