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Hi,
Can you let us know a little more about what you're doing, when & where.
If your taking pics of other aircraft you shouldn't have a problem because the air is very clean up there. If you're taking pics of the ground, it's a different story and haze will probably be a major problem. That's where the 'where' comes in - over the Alps or the Sahara and there's little haze to worry about. Mid-summer in equatorial Africa is like flying in a bowl! Sometimes the haze is so bad you just have to pack up your kit and go home. Cloud is also a problem at that altitude.
If you're just dealing with say, UK in Spring you won't have much haze and a UV, or better still a Skylight (1B) will get through it quite well. A Polarising filter will be better still, but due to the way they work, you can't always get the maximum effect because of your position in relation to the sun.
Keep your batteries in your pocket so they're nice and warm when you put them in.
Other problems you will encounter. You mention -20 so I assume you're unpressurised and at 16,000 feet you'll be on oxygen. You'll find the oxygen mask really gets in the way of the camera. Also, you'll be blinking a lot because it's very dehydrating at that altitude.
So, you're cold, thirsty and wearing an uncomfortable mask. I suggest you wear thick gloves until you start taking pictures otherwise your trigger finger will get stiff (and blue).
Feed us more information and we'll see what else we can advise on.
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13-08-11, 11:48 AM
