Vans are often the same vehicle, but rebadged.
The Vauxhall Vivaro, Renault Traffic and Nissan Primastar are all the same van, just with different tweaks depending on the brand.
Some Mazda's are old Fords, with different names.
And is the the Toyota Aygo that citroen and peugeot make the same of?
But I can't see it being the same with lenses, it would be too obvious, although one could argue that whilst the physical outside of the lens was the same, the quality of the glass inside was different.
However, as someone who does not handle many lenses at all, I would rather go with the view of Stewart who does.
Would you care to tell us which ones?
Many car manufacturers use common floorpans, but to say that some Mazdas are "old Fords" is a bit wide of the mark.
Getting back to lenses, Vivitar used to use up to a dozen manufacturers to make their lenses - komine, Tokina, Kiron, to name three. I believe that Zeiss used an old Minolta lens for one of their models.
It is therefore not impossible to believe that Canon, Nikon or any of the other large manufacturers use outside contractors to build their lenses.


