Hi Im thinking on getting on the hdslr train while wating for something better to come out. Just want to have another option to my hvx200 and I find the 7d to be interesting. I wonder if I waste money if I buy a canon 16-35/2.8L or a 17-55/2.8 EF-S since I mainly want to use it for video. I mean the video is heavely compressed with h264. If I want the option to use the lens with the "coming" 5d replacement, do I need to get a L lens?