Tiffen 4 x 5.65" Attenuator Color Graduated ND Filter (Vertical) Canon CINE-SERVO 25-250mm T2.95 Cinema Zoom Lens (PL Mount) The Schneider Xenon FF Lenses

The Schneider Xenon FF Lenses are available in 18mm

-For Broadcast or Cinema Shooting Styles

as well as the same 100mm front barrel diameter with the other lenses in the Xenon FF line of lenses (although the 18mm does not have a front filter thread as do the other focal lengths)

and 85mm  Compact Prime lens is derived from the same classic optical formula as the preceding CP

then mounting to precision metal rings

Tiffen 4 x 5.65" Attenuator Color Graduated ND Filter (Vertical) Canon CINE-SERVO 25-250mm T2.95 Cinema Zoom Lens (PL Mount) The Schneider Xenon FF LensesThe vertical Tiffen 4 x 5. 65" Attenuator Color Graduated Neutral Density Filter is compatible with filter holders that can accommodate 4mm thick, 4 x 5. 65" rectangular filters. It is densest across one of its 4" edges, which corresponds to a reduction of light entering a lens and tapers to clear at the opposite edge. This portrait format, 4" wide gradation can be used to selectively darken an image from edge to edge, allowing for wider apertures or