[Klaus]

Sorry, but that's not my experience so far. But then I never sent in a lens claiming it's decenterred. All of the lenses I sent in had issues:

 

300/4 PF E was one of the batch with terrible OS. Now it's okay

85/1.4 G was sent in because AF motor was broken within warranty time, service and still working fine with the usual complaints about CA wide open. Hardly a service issue.

24/1.4 G fell down a stair and had a little bump go the filter thread (inside it, I don't know). Serviced a reasonable price.

 

If a kit lens is made as a throw-away at that price, I won't blame the manufacturer. If a 2000$ lens is designed that way, I hope to find out before buying crap. Canon lenses are designed very well, I learnt from lensrentals. Pity, their cameras use sensors which can't reach Sony quality.

 

To put things in perspective: Although I do sometimes paid jobs with my gear, most of the time I use it for my pleasure and sometimes for the pleasure of others as well. In 95% of my "average" shots it's the guy behind the lens, not the lens itself responsible for sort of an average result. Although I have to say, my average improved I'm still far away of delivering top quality all the time. What use is the best, most repairable lens for if I don't have a story to tell with?  ^_^

 

 

Yes, of course, professional grade lenses are designed to be serviceable.

 

However, I have often received replacements for lenses around the 800$ mark.