BMPCC with Speed Booster (BMPCC Version) and Tokina 11-16

I shot this after my BMPCC Speed Booster finally arrived. When I mount the Tokina 11-16 f2.8 DX2 to it, I can notice a big problem with sharpness in the center, especially when wide open. The corners, ironically, seem to be way better. Even when stepped down, the sharpness is not really good. Does anyone else have that problem and/or a solution for it?


YOUTUBE VIDEO HERE

At least on the Canon mounts, the Tokina 11-16mm is notoriously soft and there appears to be an uneven measure taken in manufacturing this lens as it varies. I would guess the speedbooster could be enhancing whatever deficiency might be inherent to the lens.

I can say, you are very lucky) Because my tokina 11-16 with bmpcc speed booster is so sharp, that I can't even use it without mist filters, all details has very strong moire... especially when shooting city landscapes...

I can say, you are very lucky) Because my tokina 11-16 with bmpcc speed booster is so sharp, that I can't even use it without mist filters, all details has very strong moire... especially when shooting city landscapes...

Similiar problem and getting ready to solve it. Which mist filters do you like for this. For other solutions?

Tiffen ones. But I will try in next days to use a cheap Chinese focal reducer, maybe it will help, because I have seen many video's on net, where is no moire at all with it. I'l let you know later when try it.

To the topic starter.

All lenses are clean? Maybe there is dirt on lens or speed booster somewhere.

Yeah, I also thought that. But they're both completely clean. You can see perfectly through the booster.

Then maybe the speed booster need to be adjusted, there is a instruction on metabones site. Have you tried it with another lens? If not, do that in any store. And check there your tokina.

I tried the lens on a Nikon body today and since the focus is not perfect, it's way better than on the SB. Might have to get the lens checked, too, though.
Then I tried another Nikon (or Sigma in that case) lens on the SB and I had another weird problem. On 12mm, the background is sharp when focused to 0,3, but when I focus to infinity the whole picture blurs. On 35mm though, I could focus really close and shift it to the background without a problem, even on wide open. The image is sharp and very nice. Do I still need to try to adjust the Speed Booster or will I have to send it in?

Yes, adjust it.

Jep, did it. It's not perfect on infinity, especially after 3-5 meters, but WAAY better now. Thanks for your help!