Although I've been to Antarctica 3 times, So Georgia 2x and spent 2 wks on the Falklands, this will be my first (and only!) trip to Snow Hill for the Emperors so I want to do it right because there will be no "do overs"--time's running out for me My wildlife kit which has taken me almost every where in the world I've wanted to go and has worked great for me is the 7DMkII, 100-400 II, 24-105, Sigma Art 18-35 f/1.8 (plus all the TC and extenders, etc). The Sigma is not weather sealed so I've only used it in Africa for night photography and low light people photography. I've also got an M5 system but lack of weather sealing makes me hesitant to use it although I've used it in some cold weather. Thick gloves would make it a true nightmare there, most likely! So my question is what wide angle lens should I invest in for my 7D for this trip since there are possibilities that the chicks may come close to us and I don't want to miss these shots, esp in context with the colony/chicks behind. I certainly am not adverse to brands other than Canon since I'm not a frequent wide angle shooter but would prefer to have something that has future use as well. Autofocus is a plus since less fumbling with gloves and moving objects is preferable. Looking forward to your advice--
Catherine
Catherine