I am having a problem with my new lens (new model Nikon 80-200/2.8 ED AFD ). I am using it with my Nikon N70 body... and last weekend tried taking photos of my daughter at her gymnastics meet (no flash allowed) and I kept getting that there was not enough avail light that the photos would be underexposed... the place was fairly well lit but still, without a flash it wasn't possible.... how can I actually use this lens at her next meet, without the flash....do I need a VERY high speed film..is that the problem ? I Was using 400speed..superia....will this solve my low light problem..if so whatspeed to get? Or is the problem my N70 body???