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Unusual Vintage Filters? Sliding Filters from the 60's


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#1 Devon Green

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Posted 21 April 2007 - 06:01 PM

I picked up some vintage camera equipment today and I discovered some very unusual filters. They are from the 1960?s.

One filter measures 13X 2 ½ and is labeled ?Mitchell Diffusion Clear to D? as well as another labeled Fog 1/8 to 4

I also have two sets of 4 filters measuring 8X3 and also labeled ?Sliding? and ?Clear to D?

I believe these are called sliding filters and there seems to be a reference to them in Cliff Hancuff?s post here http://www.cinematog...line_Effect.htm
There is also a company that has ?Sliding Mitchell diffusion? filter listed under special applications here http://www.redmanmov...?categoryID=200

I am still unclear about what these filters did/could do. So the question is are these filters useful for anything today or are they worth anything?

Thanks!
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#2 David Mullen ASC

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Posted 21 April 2007 - 06:26 PM

Sliding Mitchells were mainly for shots that moved from wide to tight onto some actress' face. Sometimes with graduated Fogs and whatnot, for doing a transition into a dream or fantasy sequence.
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#3 Mark Dunn

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Posted 22 April 2007 - 01:18 PM

By the way, I have an old set of 6x6 inch Tiffen 85NDs picked up at a market 25 years ago. I nearly sold them last year until the chap realised they weren't 6.6 inch. What would they have fitted and how long have they been obsolete?
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#4 Chris Keth

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Posted 22 April 2007 - 03:11 PM

I used one of the grad fogs to sell an effect of a smokey gas filling a room where we only had a little fog machine. We set up the fog machine so it would pour out of a vent and then just used the grad filter to slowly pump up the overall fog level. It worked pretty well.
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Aerial Filmworks

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Broadcast Solutions Inc

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