Now to the problem:
I was clear that the tripod is not considered a super stable, but with my EOS 500D + lens (total about 1.5 kg)
it was hardly possible to place the camera on a flat surface. One problem is the heaviness of the lens.
The only way is the supporting of the lens with a foot. However, it must be ensured that the distance moved neither the focus nor the focal length.
Often the feet on smooth surfaces slide apart over time. So I could the camera times just to catch, as had min one leg reaches the edge of the table after about 5.
