Aperture Priority

[neiloliver]

Jimmy, Stu, et al..

I must admit I am struggling getting fast moving things (RC cars) in focus in Av mode. I am currently only using the 17-85mm F4-5.6 IS USM with the 450D as the 70-300F4L is not here yet. I am trying to pan correctly and have taken many shots, but end up going back to Shutter priority..

If the damn things stand still then i am fine...

I have only tried photos over two meetings and of course I need a lot more practice but want help on which direction to try. Ideas please?

N