This weekend I will be going to the New Jersey Motorsports Park to shoot some car races. I want to try some panning shots but would love some tips on both camera settings and technique. My setup will be an EF 100-400mm f/4.5-5.6L IS mounted on a 50D.

What shutter speeds work well for panning a race car?
One shot focus? Servo focus?


Itheone : We have a similar setup and you take amazing pictures so I'd love to hear from you!

Any help is appreciated