This lens rocks. Pairs really well with the super speeds and has a cool rainbow flare.
The Optex 5.5mm (not this exact lens) was used quite a bit on "Poor Things." 
This is one of the only other Optex original lenses.

I used this lens on both my Canon C70 and Arri 416. Happy to share that footage if you reach out.

It's a fantastic versatile wide angle with far superior contrast/rendering at T/2 than the Zeiss or Elite super speed 8mm.

The Optex 8mm features a rectilinear design with minimal barrel distortion compared to a fisheye wide angle lens. With a fast T2 aperture, a 15 inch close focus, along with integrated 0.8 focus & iris gears.

I had the lens collimated in Michigan a few months ago and I'm happy to put you in touch with that lens tech as well.

Front and back caps are included. This lens was used so I can't call it "mint" but it's darn close. Very pretty, no scuffs, obviously no issues with the glass: no scratches, no fungus, no haze, no separation, there is micro dust but honestly it's exceptionally little for a lens of this age. You really have to search to see any micro dust. It's fantastic.

OTHER LISTINGS:

Optex 8mm T/2 Super16 Wide Angle Prime Cine Lens ARRI PL Mount s16 super 16mm


9.5mm ZEISS Super Speed B Lens MKIII MK3 Triangular Iris ARRI PL Mount T/1.3 s16


MK1 Zeiss 12mm f1.2 T1.3 Distagon T* ​Superspeed B Speed s16 super 16mm Arriflex PL Lens


Canon 8-64mm t/2.4 s16 "hurt locker" lens


Canon 10-160 t/2.4 with built in doubler 2x B4 adapted to Arri B adapted to PL - sleeper amazing canon super zoom covering s16 and s35 with doubler in