What is the best tripod on which to mount a 500mm or 600mm lens?
Today there are only two realistic choices,
the Gitzo Carbon Fiber 1325 for most telephoto lenses, and the Gitzo 1548
for the heavier 600mm f/4 and 400mm f/2.8 lenses.
Both are strong and sturdy and lighter than the older, heavier Gitzo
Pro-Studex models like those in the 340 (now 1340) series and in the 410
(now 1410) series.
I absolutely love my carbon fiber tripods. The 1325 and the Canon 500mm
F/4 L IS lens make a relatively lightweight combination that is hard to beat for
birds and general wildlife photography.