This is a very well made lens. It IS built like a tank with robust magnesium alloy barrels, lots of long thick screws holding things together and nothing flimsy to be seen. The electromagnetic focusing motors, which were a weakness a few years ago, are now built like you could pull trucks out of ditches with them.LensRentals takes great care in ensuring your rental arrives in tip-top condition. Be sure to keep them in mind for your rental needs.
The more subtle stuff, things like the neatly laid out flexes and reassembly markers, indicate to me that a lot of care was taken in designing this lens. Nothing has that ‘we can stuff that in this nook over here’ look.
It’s a great lens optically that is very well built.