Smitty2k1 wrote in post #18588402
Posting this same question elsewhere on POTN, but thought I'd throw it in here as food for thought -
I'm looking to compliment my 70D's 17-55 and 70-300L with an ultrawide zoom for landscape and architecture photos (no astro work).
Canon 10-22
Canon 10-18
Tokina 11-20
The two Canons can be had for almost the same price used, but the Tokina is almost double the price. I like things about all three lenses and am probably over thinking this, but I always like hearing other's opinions

So if you were me, which would you buy?
I have the Canon 10-22 and like it, haven't used it too much yet, but seems acceptably sharp. I borrowed a Tokina 11-16, really sharp, but limited range, if that 11-20 was as sharp it would be a great choice. Between the two Canon lenses you list, I'd go with the 10-22 for the wider range.