Finally got my 12X20 camera from Wisner about 2 months ago, and have run ca 75 s heets thru it, mostly for Pt/Pd. Everything seems to be working fine, except th at the camera rotates freely on the A250 Reis head, despite my best efforts to l ock it down. I'm using a 3/8" screw, but there is so little resistance to rotat ion of the camera, even when I screw it in as tightly as I am able, that inserti ng a filmholder nearly always results in some movement unless EXTREME care is ta ken. Thus, where exact framing is important, I lose a % of images (painful to t hrow away a sheet of 12X20: that's 4-5 rolls of 35 mm film, or half a box of 4X 5, gone up in smoke!) I'd like to shoot a few verticals occasionally as well, and I will leave you to guess how this has been going with this much play betwee n camera and head! There must be some sort of rubber grip I can use to prevent this, as a number of quick release attachments come with out of the box. What's my best bet to stabilize this 25 pounder?
Thanks as always,
Nathan
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