8 incredible days driving around New Zealand's North Island was a great occasion to use my friend's Canon 5D mk2 and his wide angle 17-40mm f4. This set delivered really sharp pictures shot in raw with a decent dynamic range. I also used a 70-200 f4 which is light weight and offers a good alternative. Too many wide angle pictures ends up being boring.
Most of the pictures were under exposed to avoid burning the highlights which is quite easy with clear sky. Snow is always a challenge as it really under exposes everything else and turns the sky to deep blue, sometimes unrealistic.