Film-Tech Forum ARCHIVE: Schneider and ISO optics issue

This is topic Schneider and ISO optics issue in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.

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Posted by Antonio Marcheselli (Member # 373) on 09-09-2003, 05:38 PM:

Hi everyone

I found that in many of my lenses there are dust or dirty in the inside of the lenses... How is it possibile? Is there a way to clean them?

Bye
A

Posted by John Pytlak (Member # 331) on 09-09-2003, 08:14 PM:

As mentioned in another recent thread, moisture or oil can certainly get inside a lens, requiring professional disassembly and cleaning. Dust would be unusual, but perhaps the lens was used in an application where dust could be blown in, like a Century Cine-Focus blower. Or someone used high pressure air to try to "clean" the lens, forcing dust inside.