Francois, you are not playing properly.
Expensive lenses are meant to be bought after much sacrifice, placed within an airtight glass cabinet (never on a mantlepiece), bowed down before and worshipped twice a day.
Under no circumstances should the focussing ring be moved, either electronically or manually (by hand). Why else did you imagine that QC departments were recently and collectively deemed unnecessary? It's the new way - Passive Photography, the new form devoted to theoretical imaging.
Enjoy from afar.
Good morning Rob,
Actually, I have a friend who has a collection of expensive lenses and it looks like he plays properly
! Maybe 80% of his lenses stay in the original boxes, in a closet. He also had a collection of Leica bodies and lenses and he kept all that stuff in a safe in a Swiss bank. He could never show me a single photo made with his Leicas. That must be theoretical imaging!
Me? I've dropped lenses, took them under torrential rains, in blowing sands, got on top of the Alps by freezing temperatures.
So, you're right, I don't play according to the new Passive Photography
rules. I'm already too old, I guess. It's a case of adapt or die!