As we will be able to photograph a range of different subjects, from landscape, plants, people, mammals and birds, we recommend a range of lenses from wide-angle to telephoto. A wide-angle zoom, e.g. 24-70 mm and a tele-zoom, e.g. 70-200 mm, 80-400 mm or 200-500 mm will give the best opportunity for a range of subjects.
A longer prime telephoto lens, e.g. 500 mm or 600 mm is very useful for bird and mammal photography. To ”increase” focal length, you might use a teleconverter, or a camera with a smaller sensor.
It is important to protect your gear from snow, rain and saltwater splashes. Good waterproof covers for your camera bag or rucksack. Maybe a waterproof sack for all your gear whilst on the zodiacs?
If you have two camera bodies, bring both. Tripods can be good for photography and film-making ashore. Bring plenty of memory cards and storage space, because more photos are taken on these tours than most people think.