400mm f2.8 VR
They are pin sharp, fast and long.
We have used the 500, 600 and 800mm in the past, but always revert back to the 400’s as our “go to” long lenses.
For us, the 400’s are the perfect balance between focal length, clarity and portability. Coupled with the 1.4 and 1.7 convertors, they give us a multitude of options for composition when we are trackside.
We actually prefer this slightly older model than the new lighter offerings because they are balanced much better for panning with slower shutter speeds.