i love my tokina 11-16 and want to use it on my 5d (more as a 16mm prime), but it's vignetting indoors with my CPL filter on it. it nearly goes away (indoors) when i take off the filter, but i'm going to want to use the filter for landscapes. i'm hoping the effect isn't as bad with sufficient lighting outside - i haven't had a good opportunity to test that out.
is there a good uwa out there for $600 with optics as good as my tokina? i also love this lens because it's so versatile for filming