if the lenses are made in China, den Canon willhave alot of cleansing to do in China.. Otherwise the consumers will be boycotting their products.. Canon will not allow their M&Ms be taken away.. hehe..
I would totally avoid any L lens if they're manufactured in China.
Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.
Canon so mahuan one.Olympus(Not Sigma),just go to the shop,open for warranty card fill,check the physical condition(Most of the time good) then pay $$ and walk away.Olympus promise no dust speck.No QC issue.
It is only hear say that some components of their lenses are made in China.
In computer world this is so common.
If you opened up an IBM PC you may find components made in Mexico for example.
Anyway I have a Fuji camera made in Indonesia.
I am ok with Canon standard lenses to be made out of Japan, bit I'll never never buy any L lenses that is made elsewhere except Japan (if I know). L lenses have to be totally made in Japan.
Regardless which type of lens , they made from china,even there are in the component level.
Important , there should has good QA or QC procedure system in place.
If there are loop hole on the QA or QC system. How Good you can expectfrom the part?
U do the decision.
Nikon used to have some problems with their VR in the 70-200mm lens, and this is
Japan assembled lens!
There are more problems with lenses made outside Japan.
When I look at the refurbished area of Adorama Camera in the U.S.A., they sometimes have L-series lenses available, but there is no way to know the frequency of the problems that caused them to be repaired.