So i'm going to china at the end of May for 2 weeks. hong kong, shanghai, bejieng, and a few outskirt areas.
i have about an 800-1000 budget to spend on some more gear.
i only have whats in my sig currently. i think i will be buying a 17-40L as i like wide shots(had a 10-20 on my old 40D that rarely left my camera when i went to paris), I don't have the funds for 2 lens at the moment but I'm thinking if i should rent a 70-200 for the trip or maybe a 135L. any one have some suggestions? should i also get a polarizer or a graduated filter?
i will be obviously doing some landscape/sightseeing shots, but would like to take some candids as i know there will be plenty of opportunity for those type of shots in crowded china.
thanks!

