quixdraw wrote:
My copy of the 28-300 is not reliably sharp, possibly I got a bad one. The 24-120 is quite satisfactory, as is the 24-85, though it doesn't deliver the range you require. Again, missing the low end you want, the old AF Nikkor 75-300 4.5 5.6 is a real jack of all trades, sharp, and cheap enough that I bought one to give to a friend.
I've used 3 copies on a D800 and a D810 and I can say, without hesitation, I share your experience with the 28-300. It's one of the few lenses that Nikon makes that I would never own, and strongly recommend against. It's actually not terrible on a 12 mp camera like a D700 or D3S, and does a somewhat decent job on a crop sensor camera, but it would be the absolute last choice for a D850. Getting a bad 28-300 is an oxymoron.