Just acquired a200-400 . It's big, it's heavy and for extended use it needs support. I have until now shied away from using monopods particularly as they restrict movement, both while shooting, but also moving about the track (I shoot motorsport). With the 200-400 there is little choice
Have done some research on the best way to get consistent images from a long mounted on a . The following is what I have discovered, hope it is of use to someone. Feel free to add to it.
1. Support: a long needs a suitable solid support. This is both the and the head. Solid head choices are somewhat limited. I have a mafrotto 232 which is a (2.5kg capacity) tilt head on a 679B . The head is not suitable at all, and the , while rated to 10kg, does flex abit under the load. Options are Gitzo monopods, tho I think a Manfrotto 681B might be OK. For a head, short of a Wimberley set up on a , Really Right Stuff make a range of heads that are highly regarded.
2. Correct use of the long on a (known as Long Tens Technique or LLT) is critical for consistent results. The best reference in a single artice is by Moose Peterson
I've been practising this technique and have found it to improve the keeper rate, but isn't easy to master.
3. Finally I've purchased a Hoodman eyecup for pressing my eye to the camera as without it, it becomes very difficult (plus it hurts after a while!).
I've removed the head from the all together and just screw it directly to the foot of the . The EOM foot did flex a little too so I've replaced it with a Wimberley foot. A further advantage with the Wimberley foot is that it has a smaller gap between the foot plate and the so I can operate the zoom comfortably.