digital paradise wrote in post #17770458
Not sure but if you use the right alloys you would be surprised and how much weight one can handle. I have yet to hear of one letting go yet and people use the black rapid strap and other methods. The lens hangs upside down and my guess is those 4 screws are exceeding Canon specs? It is intended for a tripod only?
I'm pretty sure I read somewhere Canon stays you are supposed to use the body strap mount only which contradicts what I have read about not holding the combo by the body only due to strain on the bayonet mount.
I'm not sure if Canon endorses any system that carries the combo via the foot. I have not looked into this for a while now.
Any time you carry via the foot or tripod socket you take a risk. This is why so many people have additional custom back up strap methods. There was a very long thread about this on this site once.
It's what frightened me when I had the 70-300. I bought the Optech system (had to ship it from US as there was nobody selling it in Oz at that time). I find the strap and the shoulder sling perfect when attached to the camera via optech clips. I can hang the 5d3 and 70-105 on one side and the 7d2 and 100-400 on the other. Hardly know I'm carrying them and they both hang vertically with the lens pointing straight down. It's the same when I just have the 7dll and 100-400ll on a strap. Hung on one shoulder, again, when carrying just one combo, the combo hangs vertically. It may not be ideal, (not supporting the lens) but it certainly feels safer not having the weight of the lens "levering" against the body mount. Whenever possible, I cradle the lens "rifle style" in the crook of my arm and just lower it to the vertical when I need to rest my arm. Adjusted to the right height/lstrap length, I can keep both hands on the grip of each body to stop them swinging when I am walking fast.
Both bodies have male plates attached so if need be, with that "arms length" of optech extension strap, I can attach to monopod/tripod without even taking the camera off the sling