[ioled]

Ken Rockwell is known for his reviews of products he never used. :-P

Well, he singled out Tokina among the other third party manufacturers for some reason. At the same time he was/is on a crusade against Tamron and Sigma (he warmed to Tamron later for some reason though, but kept his stupid name-calling campaign against Sigma, again for no apparent reason).

Mostly of course his site is comedic reading.

Tokina made lenses with metal parts or something and he liked it. Sigma reverse engineers the mounts and so he claims there is a high risk of future incompatibilities. But Ken Rockwell is a bit tongue in cheek so... Whatever.