This is topic Sankyo lens - dismantling tips in forum 8mm Forum at 8mm Forum.

To visit this topic, use this URL:;f=1;t=005806

Posted by Mark Kelsall (Member # 2184) on November 07, 2010, 11:30 AM:

I have a Sankyo made B&H DCM Super 8 sound projector and the lens has some furring on the inside (at the film gate end of the lens).

Looking at the end cap of the lens barrel (which is steel) there are two small holes. I think if I mad a two pronged tool, I might be able to unscrew the end to clean the inside of the end lens.

Does anyone have experience of this?

Posted by Bart Smith (Member # 780) on November 07, 2010, 12:12 PM:
If you search for a 'lens wrench' on eBay you'll find a suitable tool.
Posted by Mark Kelsall (Member # 2184) on November 07, 2010, 02:41 PM:
Thanks Bart
Posted by frank arnstein (Member # 330) on November 07, 2010, 07:21 PM:
I suggest you try to replace the lens with another clear one.
Despite my numerous attempts to clean cloudy lenses, none of which was successful.
I now replace all lenses that arent crystal clear. The time you can waste trying to clean them is not worth it.
Zoom Lenses are especially difficult to clean & then reassemble correctly. Unless you know of a specialist lens person, dont take them apart because they will often be even worse after you have finished the job. [Roll Eyes]
Posted by Alan Rik (Member # 73) on November 08, 2010, 07:46 AM:
I took apart my Schneider 1.1 lens when I saw the furriness you talked about. I then used some cold cream to clean it and voila! its been over 3 years or so and its still clear.
I was told by those in the know that there was a 50/50 chance that the fungus might grow back but so far so good. With this hobby if you found another lens that was cheap may not be worth it to go through the hassle. Me? I HATE throwing things away. Especially a Schneider lens!
Good luck-

Visit for free equipment manual downloads. Copyright 2003-2019 Film-Tech Cinema Systems LLC

Powered by Infopop Corporation