Replying to What Canon Lenses do you use for Filming Skiing

I've was just wondering what kind of lenses everyone uses to film. I know a lot of people on here use Canon cameras like the 5Dmkiii, t2i/500D and 7D and was curious about the types of lenses you guys use. I'm currently shooting with a 50mm f1.8 and the 16-35mm f4L on a 7Dmki and thinking about purchasing a 70-200mm f4L and or the 24-105 f4L. Both the lenses I currently use are awesome, great sharpness overall just wanted to know everyone else's preferences.