I need to shoot in vertical format. The camera (Sony NEX-5RK) is clamped to a vertical round stand with a grip-like mount. My problem: no matter how hard I tighten the 1/4" camera screw on the mount, the weight of the lens slowly tilts the camera down (i.e. the camera rotates around the 1/4" screw). Neither the camera nor the mount have any additional pegs/holes that would keep the camera in place. I ended up tying the lens to the mount with a piece of insulated wire. Is there a better way?
The solution can be to use tripod, not stand. This will give you much more stability and solution to set your camera on different positions.
And to use also L bracket to mount the camera to the tripod vertically and keep the center of gravity over the tripod head/mount.
Also depend of the lens you use (if it's long heavy lens) you can consider mount the lens to the tripod (or eventually stand) to keep even more precise the center of gravity over the mount point.
To see what I am talk about check this page, second photo
P.S. I have no affiliate with any of the products or sellers