[mst]

Sorry for the late reply. Yes, I did use the collar for testing, however I always test tele lenses (anything above 100mm) using two tripods, so I can't really comment on the stabity issue you mention. To me, the collar seems reasonably stable, much better than other collars Nikon has produced in the past (like on the AF-S 80-200 or the 80-400 VR).



When testing stability, however, I don't think it makes sense to use an unrealistic scenario. If you're using a tripod and the collar, then you're obviously looking for best stability. Not using mirror lock up sounds a bit strange in this context.



-- Markus