100mm lens OKS2-100-2 for Konvas, Kinor (OCT-19 mount)
This lens was made at LOMO in 1980 (serial number is 800071).
Optical blocks OKS2-100-2 were purposed for 70mm film originally, but some of them have been housed for OCT-19 mount of 35mm cine cameras (Konvas and Kinor).
So, the lens uses central part of the image therefore (where aberrations are less).
Multicoated glass. Excellent condition.
Excellent condition except of some cleaning marks on the front element. They will not affect image qulity, and looks not so scared as emphasised on the pictures.
OCT-19 mount has short behind-the-flange part, so it will work with any OCT-19 adapter, I believe.
It has industry standard follow focus gear (32 pitch, mod 0.8).
Soviet cine industry strongly recommended to switch from OKS1-100-1 to OKS2-100-2 if possible, though this lens is not as fast as OKS1-100-1.