Hello all, I have a Nikon D90 with the 18-105mm f3.5 VR Lens Kit, i'm into a lot of sports and like Bmx, Soccer, Snowboarding etc, so i'm going to buy the Sigma 70-200mm f2.8 Lens as i hear this is a very good lens with fast shutter speed and ill make me happy when shooting water sports, soccer etc. 1. I want a nice macro lens a fairly standard one for my camera, but good enoguh to bring out the best features of say a close flower with a bee on it, so should have a good shutter speed too... which one do you suggest 2. I am looking into getting some off camera flash for BMX shoots as this would help my images alot and i could get some quality pictures, i have no experience with off camera flash but am wondering, what would be suitible for the reasons i mentioned before. if you could help answer the above it would be greatly appreciated, Thanks Tom.