I have had the 100-400mm mk1 repeatly disengage on 2 seperate bodies, I allways give the lens a good tug to make sure its engaged only to have it seperate moments later. It has got to the point that I tether the lens with a strap to the shoulder stra...
I have had the 10-400mm detach from a 20D and a 7D. I have also had teleconverters detach. It just happened 4 times in 5 minutes on the 7D. I always give the lens a good tug to make sure its engaged. I notice on the lens the hole where the body pin e...
