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  1. M

    100-400 mark ii - Tripod Mount

    I'm following this thread with interest. Firstly I would think that the thread/holding screw would have been designed so that it could not easily be stripped (Stevo). I am not particularly strong isn the fingers at 81 however it could be possible. I just wonder if WD40 or similar 9and a friend...
  2. M

    100-400 mark ii - Tripod Mount

    Following dandsblair's post, I too have a problem with the tripod foot on the new 100-400mm (a brilliant lens and very sharp - imo). It has worked loose and now I cannot either screw it down or up. I suppose it will have to go to Canon, but I am reluctant to part with it for any length of time.