Sell it because unfortunately it vignettes on BMMCC sensor and i can't accept this. This lens made for 16 mm cinema. It will fit well to Panasonic GH, Ursa 4.6k, RED, Nikon 1 in 1:1 crop mode or to any camera with small sensor, like Pentax Q or 2/3" CCTV camera. Its wide. its not perfect but has own character. Its slightly soft and dreamy wide open and rather sharp starting from T2.8 and T4. It is a low contrast lens, but you can boost contrast in post easily to match other lenses. It don't have a focus ring. It very sensitive to flange distance changes. I shimmed it to the lens mount adapter with 0.1mm tape so it focus perfect even wide open. The lens is in very nice external shape, glass is clear, maybe few cleaning micro marks in front and some dust specks inside if look too deep with flash-light. I also find that at T11 and 16 i start to see two small dark spots (see the images in dropbox folder). Seems it never was disassembled or serviced. The iris ring is clickless, working very smooth.

More large photos and sample test images here: https://www.dropbox.com/sh/720qq7fauydcc1m/AAADaLrQsHAp1o4o2LCXizMwa?dl=0

Located in Ukraine, Odessa city. Will ship worldwide. Can accept only Payoneer (Make A Payment service from Payoneer to Payoneer account 0% fee) or any Card to Payoneer (Request a Payment service) with 3% fee. Ask $330 + shipping and payment fees.

Example i find at Youtube for similar lens on Panasonic GH3, and well known sensor coverage test:

OKS 15mm T2.0 + ND

OKS 20mm T1.9 + ND

Yashica 50mm f1.4 +ND

OKS 15mm T2.8

OKS 20mm T2.8

OKS 25mm T2.7

Yashica 28mm f2.8

Yashica 50mm f2.8

OKS 15mm T4

OKS 20mm T4

OKS 25mm T4

Yashica 28mm f4

Yashica 50mm f4

OKS 15mm T5.6

OKS 20mm T5.6

OKS 25mm T5.6

Yashica 28mm f5.6

Yashica 50mm f5.6

OKS 15mm T8

OKS 20mm T8

OKS 25mm T8

Yashica 28mm f8

Yashica 50mm f8

Lens Flare test. Added Yashica ML Zoom 35-105. Same as previous test all shoot in RAW, processed in DaVinci Resolve with ARRI LogC timeline and Alexa LogC to Video LUT. No any additional color correction.

OKS-15mm-T2.0

OKS-15mm-T2.8

OKS-15mm-T4

OKS-15mm-T5.6

OKS-15mm-T8

OKS-15mm-T11

OKS-15mm-T16

OKS-20mm-T1.9

OKS-20mm-T2.8

OKS-20mm-T4

OKS-20mm-T5.6

OKS-20mm-T8

OKS-20mm-T11

OKS-20mm-T16

OKS-25mm-T2.7

OKS-25mm-T4

OKS-25mm-T5.6

OKS-25mm-T8

OKS-25mm-T11

OKS-25mm-T16

Yashica-28mm-f2.8

Yashica-28mm-f4

Yashica-28mm-f5.6

Yashica-28mm-f8

Yashica-28mm-f11

Yashica-28mm-f16

Yashica-50mm-f1.7

Yashica-50mm-f2

Yashica-50mm-f2.8

Yashica-50mm-f4

Yashica-50mm-f5.6

Yashica-50mm-f8

Yashica-50mm-f11

Yashica-50mm-f16

Yashica-Zoom35-105mm-35mm-f3.5

Yashica-Zoom35-105mm-35mm-f5.6

Yashica-Zoom35-105mm-35mm-f8

Yashica-Zoom35-105mm-35mm-f11

Yashica-Zoom35-105mm-35mm-f16

Yashica-Zoom35-105mm-50mm-f3.5

Yashica-Zoom35-105mm-50mm-f5.6

Yashica-Zoom35-105mm-50mm-f8

Yashica-Zoom35-105mm-50mm-f11

Yashica-Zoom35-105mm-50mm-f16