jonathanheierle wrote in post #16839985
how does the 17-40 compare to the 16-28? seems to be around the same price used as well
Heya,
The 17-40 is fairly sharp. It's weak points are that it's F4 maximum, and that corner sharpness is not what some would call `L quality.' There's a reason it's only $600ish used. It's just not an outstanding `L like some of the others. If using it for landscape, stopping down to F8 all the time, it's a fine lens for that. But if you want to use it for more than that, the F4 can be a big limitation (I would buy one, but I will not bother with an F4 zoom, when I can get F2.8 in similar focal lengths, but then again, I do a lot of astrophotography wide field, and general low light work).
The 16-28 F2.8 PRO is an excellent lens. Very sharp. But faster aperture. It's more comparable to Canon's EF 16-35 F2.8L in terms of it's features & qualities. 28mm and 40mm are very different focal lengths ultimately. 28mm is still fairly wide. 40mm is closer to "normal view" not wide, not telephoto. The Tokina's weakest points are the flare resistance, filter use is limited to none, and autofocus speed/silence. Seeing as you already like the 11-16 Tokina, I imagine you're already used to the flare, lack of filter use and noise/speed of autofocus. You seem to love the lens, so the 16-28 F2.8 is a no brainer to me. Giving up F2.8 for F4 just to have a Canon name, for no real gain? Not worth it to me. But that's why I have the Tokina instead of a Canon ultrawide. Price point and F2.8 are the biggest determination of me going Tokina over Canon.
Very best,