I have a BMCC 2.5k in EF mount, so my options for a fast wide are quite limited. i already have the tokina 11-6 and I hate it. I find it so soft on this crop sensor, that I can't open up past 4.0 for a usable image, really 5.6 for decent sharpness.
I need a fast wide lens for this camera really bad! When shoot on S35/APS-C I rarely use anything wider than a 24mm. which would be about 15mm on BMCC
Has anyone used the Rokinon 16mm t.2.2 on this camera? How does it perform wide open? What stop do you feel you achieve acceptable sharpness? I have the rokinon 24,35, 85 set and I am really underwhelmed by their performance below 2.8. It's sad, but I usually reach for my slower nikkors in the same focal length because they are sharper at f2 and f2.8 and flare is better controlled than the rokinons.
I guess I'm hoping that the 16mm will be sharper since it is designed to cover APS-C (not Full-frame) - so I assume I'd be using more of the image circle vs. a full-frame lens.
Anyone who has experience with both, what do you think? if I have to shoot it a t f4 I might as well stick with the tokina 11-16....
Any other recommendations for a wide lens that can be adapted to EF mount with fast speed (faster than 2.8), acceptable sharpness, and rectilinear?