First, is anyone out there using this lens? I'm considering buying one and will be using it on an older Canon 7D (original version) and a Canon 5D Mark II. I've heard of AF issues with the 7D and wonder if the newer version helps or hinders the issue. Thanks
It's a solid lens that produces really sharp images. Unless you need weatherproofing I'm not sure it's worth the extra $$$ over the cost of a Sigma 150-600 Contemporary.