ausbau optikblosk von ISCO ultrastar

[hofsethpaul]

Ich habe gute erfahrungen mit mein ISCO Ultrastar HD-plus 185 MC2,1 aber ziehe vor ein Helicoid focus einrichtung. in English, Hence I need to pisk out the optical block, from its mount. Does anyone have any tips on how to do this? The unbrako screws in front look tempting , but i need the entire block, not just a destroyed front part.

Enclosded is an unfocussd snap of the front of the lens.

p.

[gladstone]

Hello Paul,

some possibilities in adapting ISCO/Schneider projection lenses are shown here: https://www.digicamclub.de/showthread.php?t=23205

Generally you can get very good items for adapting projection lenses from RAF-camera (sold via EBAY).


Best regards,
Christian

[Jubi]

Hi Paul
as far as I know these you will have to keep at least one tubus with the lenses.
There isn't an optical block as in normal objectives, I think.
As Christiabn wrote, you can adapt them very well and easily get an focussing helicoid for them.

Hello Paul,

some possibilities in adapting ISCO/Schneider projection lenses are shown here: https://www.digicamclub.de/showthread.php?t=23205

Generally you can get very good items for adapting projection lenses from RAF-camera (sold via EBAY).

Best regards,
Christian

I used the RAF-items, too, but must say that the material of his clamps ist very thin and I don't trust them too much, especially in the heavyier projection lenses as the Iscos or Schneider Kreuznachs.
The screws holding the objective are placed in about 1mm aluminium alloy only.
He isn't willing to use thicker metal, so I changed to a chinese producer who is more cooperative.

Regards

Jubi

[gladstone]

... so I changed to a chinese producer who is more cooperative.

Regards

Jubi

Hallo Jubi,

gib mir bitte mal einen Tipp, welchen Hersteller aus Fernost Du meinst. Vielen Dank schon mal.

LG,
Christian

[hofsethpaul]

ich habe henrys samtfokus tubus und der ist gut, aber ISCO ultrastar hat viel zu viel metall rund um sein optikblock- I would like to pick out the glass and fit it in a more easily transportable helicoid since the optics use only about half of the space in the mount. (hence has a very good gegenlichtblende)