Yesterday between a few production meeting I got a chance to shoot some test footage with the Tokina 11-16mm Nikon mount.
Nothing scientific and the conditions were typical for London in the winter with a light mist/haze.
I shot the same scene with the Carl Zeiss ZF.2 to uses as reference. On the Tokina was turned to full infinity and then back just a touch. I'm happy with the result from the Tokina. Shot wide open and then again at about f8.
As I was shooting with a simple set-up exposure was controlled with L.W.C. Fader-ND MKII. Exposure was based on the in camera zebras. I set them to 100% and then used the Fader-ND to lower the exposure until no zebras were visible (except the sun it's self).
A few DNGs can be downloaded here, includes notes:
https://dl.dropbox.com/u/6460491/BMCC_Tokina_test.zipAttached images are simple grades done in Lightroom just for reference. Download the DNGs and have a play.

- Tokina at 11mm f2.8
- Tokina_11mm_f2_8.jpg (142.23 KiB) Viewed 10154 times

- Tokina at 16mm f2.8
- Tokina_16mm_f2_8.jpg (130.53 KiB) Viewed 10154 times

- Carl Zeiss ZF.2 35mm at f2
- Zeiss_35mm_f2.jpg (125.35 KiB) Viewed 10154 times