I have been using longer exposure times recently with smaller apertures for close up work in the field. Camera movement seems to be an issue. I have gone to using 2 tripods for longer exposures with a Technikardan 4x5 as well as with a 8x10 Calumet. In parts of other threads on this Forum I have noticed some members using the Bogen / Manfrotto 359 brace with an addition clamp at the top (I presume - as this was made for a motion image slider as an end brace) I would be interested in hearing what the members on this thread are using in the field and in studio to stop tripod to camera movement for long bellows extensions. I don't see the Bogen / Manfrotto 359 for sale anymore. There are several movie slider braces for sale: Alzo, Bogen / Manfrotto 122b could be adapted, and others. I don't have the heaviest tripod but am using a series 4 aluminum Gitzo with a PL5 head (no center column), and have gone to using a series 3 for a second tripod. I have done a informal study with my construction lazer level set on top of either of my cameras on top of either the series 4 Gitzo or a wooden professional Junior tripod. It seems that there is continued vibration for 10 seconds from any of my single camera to tripod joints with out a second tripod. My Calumet C-1 is the worst - and heaviest - its also 34 inched long when fully extended.
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