No lens lock on a Sigma 135-400DG, falls to full extension
I have a Sigma 135-400DG, frustratingly there is no lock on the lens to prevent it extending fully when lens pointing to the ground. (really a pain in the ####! when moving around quickly at a race track etc). has anyone come up with a fix for this?
Cameras - Sigma - Zoom Telephoto 135-400mm f/4.5-5.6 APO Aspherical Autofocus...
Answers & Comments
Buy the glass that does not zoom via push pull - When they get old and sometimes right off the shelf new the push pull zooms get loose - the only fix is for you to have it serviced and even then it is a temporary fix as the very nature of what you do to use the zoom will ultimately cause the same problem to occur.