« on: July 29, 2012, 09:14:02 AM »
I recently saw a 400 f2.8 for sale, but it had a UN06 date code, which is a 6/1999 manufacture date. The price was in line with much newer lenses, but towards the low side.
Is there a point where the age influences the pricing a bit? Yeah, the glass doesn't "wear out", but there are parts inside that may. Could the lens mount could be replaced to conceal brassing from use?
What is the expected service life of the IS portion? I suspect there is no way anyone outside of CPS would know the "on" time of the IS unit.
The rubber seals?
Lots of "touch up" paint?
Or, is it just buy one and hope it lasts.....