Okay, back to snow and glacial ice --
One aspect not mentioned yet is whether the surface is frozen or has some water among the ice crystals when melting. This could make a difference, especially with surfaces close to the camera where the detail is more obvious. UV light bounces around in the tiny shadows among the ice/snow crystals, and a yellow, orange or red filter cuts the UV and makes the contrast higher among the snow crystals. Bradford Washburn, who did many early ascents in Canada and Alaska, photographed those mountains, and later made many images from an airplane, often used an orange filter. It also darkens the sky, of course. During the summer at Spitzbergen, I imagine that most of the glacial ice will be mostly covered with snow, but the long arctic days may keep the surface in a melting state if the sun is out.
In snow scenes, I have tried no filter, yellow (wratten #8) orange, and red. The choice is a matter of taste; orange works well for me. It is easy to underexposed the shadows when metering snow scenes. I don't have a spot meter, so use a gray card or the sunny-sixteen rule. I usually use FP4, and it is very forgiving on highlight exposure.
It's good to know what to expect before-hand, but why not bring a few different filters on your trip, and try them all on the more-important scenes you want to capture?
Bookmarks