First of all - Great Forum here! Greetings from Canada. I'm going to be shooting at an indoor horse show with my Nikon D70 and Sigma 70-300 f4/5.6 lens. Flash is not an option and the lighting is crap. So.......this psuedo-beginner is looking for pointers. The equipment takes super outdoor shots (show jumping last weekend - sorry I don't have one to post, maybe next time), but indoors I'm pretty stumped. I need to freeze the action completely AND it's not very close to me - sometimes right at the end of the lens. I'm concerned this lens, because it is only f4 won't work very well (f2.8 would be better??), but.....any suggestions on how to get the best shots with the lens I have in this situation....would be appreciated. I plan to do alot more of this type of photography. Thanks.