You need to make sure to protect yourself when you head out to get those amazing shots - during an all night trek into the wilderness.
You can't be creative if you are freezing!
When you are out in the elements - you need both wind and rain protection. In Iceland, the winds are legendary - and cold - so you need a material that will protect you well. The jacket is a 'shell' so it does not provided warmth - the jacket below provides insulation.
This jacket provides true insulation in a very light-weight form factor. The insulation is a mix of goose down and synthetics. It is quite amazing - coupled with the Gore-Tex shell above.
When it's cold outside, you still need to be able to work with your camera and timelapse equipment - and taking off your gloves is not an option. These gloves are great for being able to set dial settings, and even work with your iPhone. Indispensable.
Keen makes some great hiking boots. They are rugged and durable. Do NOT go out hiking - carrying your expensive camera gear - in regular tennis shoes. Tennis shows are not designed to provide support - or warmth - or protection from water. You need to be sure-footed out there - and you want to keep your feet warm.
Everyone wears a jacket when they go outside, but when it gets cold and windy - you need to protect your legs. Regular hiking pants or denim provide no protection from a cold winter night - especially when it gets even a little windy.
If you are going anywhere near snow or ice - or sub-zero temperatures - you need Sorels. You can't focus on being creative if your toes are freezing!