8mm Forum: Sankyo lens - dismantling tips

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Topic: Sankyo lens - dismantling tips

Mark Kelsall
Junior
Posts: 7
From: United Kingdom
Registered: Aug 2010

posted November 07, 2010 11:30 AM

Hello

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?

Cheers,
Mark

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Bart Smith
Expert Film Handler

Posts: 228
From: Hackney, London
Registered: Feb 2007

posted November 07, 2010 12:12 PM

If you search for a 'lens wrench' on eBay you'll find a suitable tool.

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www.bluecinetech.co.uk

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Mark Kelsall
Junior
Posts: 7
From: United Kingdom
Registered: Aug 2010

posted November 07, 2010 02:41 PM

Thanks Bart

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frank arnstein
Jedi Master Film Handler

Posts: 534
From: Gold Coast. Australia
Registered: Jan 2005

posted 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]

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At Projector Heaven the Focus is always on Detail.

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[o:/o]<|=- dogtor@projectorheaven.com.au
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Alan Rik
Film God

Posts: 2211
From: New York City, NY, USA
Registered: Jun 2003

posted 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-

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