Cooke 9-50mm T2.5

[Brainstorm]

I think you'll find it is Optex which went down the pan, they did the conversion kits. As far as I know CinemaTechnic are still going strong.

Ooops! Thanks for the correction Martin. :umm:

[zak forrest]

what is the length of this lens?

[Harry Clark]

I have a mint 9-50 that I used for may years with my SR 1 and SR3 cameras. It's every bit as sharp as my Canon 7-63, and I think, flares less and in a more predictable way. Mine is Arri Bayo, so I use a PL adapter.
I also think that since the 16:9 (or 1.78:1) shape is more rectangular than the 1.66:1 Super-16 aperture, that the vignetting on the corners will be masked when used with Red one. If that proves true, I may have mine overhauled and fitted with a PL mount.
In any case, as you zoom in, in will cover at some point.
A great lens. Focuses very close, NO breathing, rugged and serviceable Cooke product.
I'll certainly make use of mine when light weight is more important than full 4K chip size (run-and-gun, 120 fps, etc.)
Also, FYI: this lens was popular for a long time with tabletop TV commercial guys. Since it's so small and optically top-notch, we used to put a 2X extender and PL adapter on it to make it cover on a 35mm frame. Worked great! This was before probe lenses like the Revolution.
Cheers,
Harry