Isco Optic 100/2 Ultra MC gold

Sony a6000

 

Isco Red Ultra Star HD 42,5mm 1.85 MC

The lens is long and heavy for similar lens, eg. compared to SK Cinelux 40/2. It looks like projection lens+anamorphic attachment combined.
here's the lens side by side with 60mm isco ultra star + anamorph atttachment

lens on NEX

crop from above

less distortion

Taken with Sony a6000

Isco Optic Ultra Star HD 65mm

The lens doesn't has description about the maximum light can through, which is usually indicated with the "F" letter. But the rear optic indicate that it has at least f2 like other isco lenses. f2,4 has smaller glass.

the lens identity

It's sharp. yes. at close distance to infinity

Isco - Optic Kiptron MC 90mm

The lens can be used on DSLR, or 35mm film camera.
These pictures were shot on Sony nex+Lensturbo

Isco ultra MC 2/100 film 35/70

Isco ultra MC 2/100 - 3,94 inch film35/70  is a lovely lens. Painted in gold color, not so heavy like Visionar lenses. I guess, as newer lens with lighter material, that's good in mirroless cam.

35/70 film means that it's designed for projecting 35mm and 70mm film. 70mm film offered high resolution, but it cost higher price too. That's not important for me who use it in still image digital camera, maybe analog camera too.

Isco Gottingen Isconar 135/4 Exakta mount

Got mine from very good friend Lars from Norway. It's the all metal and light version.

wide open Soft at close distance but sharp at around 4 or 5 meters to infinity.

wide open, distance approx. 10 m

wide open distance approx. 2-3 meters

Infinity at F 8 or F11

closest distance, f5,6