Ian, check your decades. From my recollection, Tokina was already very well known in the mid 1980's when I bought my T90. I remember drooling over the ads in the back of photo mags; the 80-200 f/2.8 AT-X was a very drool-worthy lens, and I recall Tokina receiving favorable reviews. Checking ebay and KEH, there are lots of Tokina lenses in Canon FD mount, which Canon ceased production in 1987.