Incense

by Bart Arondson

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11
votes
4answers
2k views

How to adjust sunrise and sunset times according to altitude?

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 ...
2
votes
1answer
3k views

What battery types are suitable for low temperatures and high altitudes?

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. ...
9
votes
3answers
1k views

How does altitude affect camera and lenses?

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 ...