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Topic: Color Correcting with Filter?

Ernie Zahn
Jedi Master Film Handler

Posts: 540
From: Greenwich, CT, USA
Registered: Oct 2004

posted August 24, 2013 09:43 AM

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I've heard of a filter that improves on the reddish fading on films. Not permanently of course. Wittner has one for $180.

I saw this video, don't know if it's the same one but it looks pretty good:

http://www.youtube.com/watch?v=LedPrbUPlok

Anyone own one? Seems like it would be a great way to breathe new life into those faded films. Would love to hear feedback.

--------------------
Check out the trailer for my feature length Spaghetti-style Western:

Six and Bisti

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Chris Fries
Master Film Handler

Posts: 399
From: Ohio, US
Registered: Aug 2011

posted August 24, 2013 10:07 AM

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Hi Ernie,

I posted this in early 2012.

The cellophane I use isn't exactly Blue Cling Wrap, although that might work too. It is a little thicker than that. It is a roll of blue clear gift wrap that is sometimes used to line Easter and gift baskets. I found it at a party/novelty store. I cut off a piece and taped it over the lens. Just one layer, though. Two pieces makes the picture darker and everything looks purple. Ideally I would use a piece of blue colored gel used for theatrical lighting. I don't have any of that handy so I found something like it. I tried a crafts store but the wrap was expensive. I got a much better deal at the party store.

Here is a discussion about filters from last month.

http://8mmforum.film-tech.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=1;t=008365#000005

Hope this helps.

--------------------
There's a great big beautiful tomorrow just a dream away.

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Hugh Thompson Scott
Film God

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From: Gt. Clifton,Cumbria,England
Registered: Jan 2012

posted August 24, 2013 10:14 AM

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The easiest way, and very effective way Ernie is to invest in some
theatre lighting gels, you'll find a combination of yellow & blue
works wonders with helping out with colour fade. Using only blue
makes people take on the pallor of the living dead.

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Robert Crewdson
Phenomenal Film Handler

Posts: 1031
From: UK
Registered: Jun 2013

posted August 24, 2013 10:18 AM

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It did a good job on that film, though I should imagine that if a film has turned completely red then there is nothing the home user could do. I have a set of gelatine filters I bought from an ad in Movie Maker back in the 70s, I think they were originally used for theatrical lighting and were being sold for special effects, such as using a blue filter for turning sunlight into moonlight. They were fairly cheap as they are not optical quality. Worth trying on one or two of my red films.

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Maurice Leakey
Film God

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From: Bristol. United Kingdom
Registered: Oct 2007

posted August 24, 2013 10:29 AM

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This is what I put up a few weeks ago.
http://www.stagedepot.co.uk/lighting/gels?gclid=COm0wOj8sLgCFWbJtAodWUUA2g

--------------------
Maurice

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Chris Fries
Master Film Handler

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From: Ohio, US
Registered: Aug 2011

posted August 24, 2013 10:52 AM

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Hugh is right.

If a film a too red, just a blue filter does strange things to the color.

I have a 50' reel called "Adventureland" from Disneyland. It is almost completely red. I put two layers of blue cellophane over the lens. This is the result.

http://www.youtube.com/watch?v=Q1ERE9UG51w

The living dead. [Big Grin]

[Big Grin]

--------------------
There's a great big beautiful tomorrow just a dream away.

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Paul Browning
Phenomenal Film Handler

Posts: 1006
From: West Midlands United Kingdom
Registered: Aug 2011

posted August 24, 2013 11:02 AM

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Hi gents , don't buy them , just find your local theatre lighting company ( stage electrics is in Bristol now) and ask for the rosco swatch book for the colour gels that they do , all shades of colour are supplied and the size will accommodate the lens on your projector , you just need to find a way to fix it over the end of the lens maybe a tube of some sort .If you search on line i'm sure they would be happy to send you one in the post . To do a proper job you need the coloured optical glass used in night club lighting effects , these are correct colour density and heat resistant , but expensive.

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Ernie Zahn
Jedi Master Film Handler

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From: Greenwich, CT, USA
Registered: Oct 2004

posted August 24, 2013 11:17 AM

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Cool thanks for all the helpful info. I should have thought of gels. I have a few lighting friends who would be able to lend me some gels so I can test which combo works best.

--------------------
Check out the trailer for my feature length Spaghetti-style Western:

Six and Bisti

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Robert Crewdson
Phenomenal Film Handler

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From: UK
Registered: Jun 2013

posted August 24, 2013 11:25 AM

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Chris, did you film this off the screen, looks pretty good with only minimal flicker.

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Christian Schatz
Film Handler

Posts: 57
From: Germany
Registered: Feb 2012

posted August 24, 2013 11:32 AM

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Hello,

i've uploaded that video on YouTube. I'm using the following
color correction filter that is used normaly in photography:

HAMA HTMC Filter KB 15 - LB - 131
Light Balancing 80A
747 M 52

I'v bought it at Ebay Germany for 5€ (~ 7$).
It works nice, but it will be good to use at least projectors
with 150W bulbs. The filter absorbs lots of light.

Kind regards,
Chris

--------------------
KINOTON FP30D w/ 1kW Xenon & FP30 w/ 1.6kW Xenon
BAUER SONOLUX II w/ 36V/400W Halogen
CARL ZEISS TK35/52 w/ 36V/400W Halogen
ELMO ST-1200D M&O 24V/250W Mod with Schneider Lens 1.1 / 11-25

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Chris Fries
Master Film Handler

Posts: 399
From: Ohio, US
Registered: Aug 2011

posted August 24, 2013 11:40 AM

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Robert,

I projected the Disneyland film on a white poster board. Like all my transfers, there is some flicker. As I've said before, it's the best I can do with my JVC mini DV camcorder. I set the shutter speed to 1/60. There would be much more flicker if I didn't.

--------------------
There's a great big beautiful tomorrow just a dream away.

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Robert Crewdson
Phenomenal Film Handler

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From: UK
Registered: Jun 2013

posted August 24, 2013 11:46 AM

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Thanks Chris; my HD Camcorder has a set speed, which I think is 30fps. Haven't tried copying a film at 24fps. Your looked good.

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Hugh Thompson Scott
Film God

Posts: 3063
From: Gt. Clifton,Cumbria,England
Registered: Jan 2012

posted August 24, 2013 02:35 PM

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Rosco are the ones I use Paul, I bought some sheets years ago,
and they work very well.

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Chad Shumaker
Expert Film Handler

Posts: 110
From: Dover, Ohio USA
Registered: Jan 2011

posted August 24, 2013 03:39 PM

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Ernie,

I'm relatively new to the hobby (only a few years) and I can confirm the gels do work pretty well. Nice inexpensive solution. It does darken the picture a bit but it does work.

I used a gel that was a very pale blue. I placed a slice of it into one of those cardboard sleeves coin collectors use. I think I used a fifty cent piece size. A little sticky tack holds it in place on my lens!

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted August 24, 2013 06:13 PM

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Any recommendations for specific Rosco Gel colors that work well you. Otherwise it's pretty much trial and error to find workable colors.

--------------------
Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Vidar Olavesen
Film God

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From: Sarpsborg, Norway
Registered: Nov 2012

posted August 24, 2013 06:20 PM

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I am very happy with mine ... Bought from here : http://www.ebay.com/itm/16 mm-film-EIKI-COLOR-CORRECTION-FILTER-fits-EIKI-PROJECTOR-STOCK-LENS-not-scope-/200953923465?pt=US_Film&hash=item2ec9c98789

He's cheap at least :-) Three shades of cyan filters, makes red films look half decent

I do believe he takes request on size of the lens cap

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Allan Broadfield
Master Film Handler

Posts: 452
From: Bromley, Kent
Registered: Nov 2010

posted August 24, 2013 06:47 PM

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He does take request on size of lens, but still waiting for mine after a couple of months.

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Hugh Thompson Scott
Film God

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From: Gt. Clifton,Cumbria,England
Registered: Jan 2012

posted August 24, 2013 07:08 PM

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Looking at Ernies piece of film reinforces my point, that yellow is
needed to give flesh tone and green to foliage, but the lamp on your projector should be bright enough for good results. Janice, I'll
check my Rosco book for the coloured gels I have found to work well and get back to you.

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Janice Glesser
Film Goddess

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From: Sunnyvale, CA USA
Registered: Sep 2011

posted August 24, 2013 10:34 PM

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Thanks Hugh...I have a set of blue gels like Vidar has...but I would like to try adding the yellow and have backup filter gels too. It's easy to lose them.

--------------------
Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Hugh Thompson Scott
Film God

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From: Gt. Clifton,Cumbria,England
Registered: Jan 2012

posted August 25, 2013 05:35 PM

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Hi Janice, the Rosco Supergels that I use, are ;COOL BLUE#96,
GASLIGHT GREEN #388, LIME GREEN #96 & LIGHT STRAW #11
i experimented with the many shades available, and thought
these the best. You can also double up on a colour, like 2x blue
to 1 yellow. Hope you have fun Jan.

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Janice Glesser
Film Goddess

Posts: 3468
From: Sunnyvale, CA USA
Registered: Sep 2011

posted August 26, 2013 01:28 AM

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Outstanding Hugh! Thank you so much...No need for me to re-invent the wheel, since you have already done testing. [Smile]

[Smile]

--------------------
Janice

"I'm having a very good day!"
Richard Dreyfuss - Let It Ride (1989).

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Hugh Thompson Scott
Film God

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From: Gt. Clifton,Cumbria,England
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posted August 26, 2013 05:00 AM

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I suppose it's just a case of what you think yourself Janice suits
best the film. Incidentaly, I have found that the plastic waste fittings used in plumbing,do a great job in housing the filters as there is a flange that the gel fits against that can be held in place with a rubber ring and fits nicely over the proj. lens.Good luck.

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Allan Broadfield
Master Film Handler

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From: Bromley, Kent
Registered: Nov 2010

posted August 26, 2013 05:52 AM

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Thanks for the Rosco gel tips, Hugh. Just one question, though. Have you experienced any bleaching out of the filters under the intensity of the light source?

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Hugh Thompson Scott
Film God

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From: Gt. Clifton,Cumbria,England
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posted August 26, 2013 05:57 AM

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No I have never come across any colour loss on filter Allan as they
are well away from any heat, and the plastic fitting just fits over the lens.I think Rosco's gels have a reputation of excellence, being
used for stage lighting.

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Allan Broadfield
Master Film Handler

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From: Bromley, Kent
Registered: Nov 2010

posted August 26, 2013 06:54 AM

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Thanks, Hugh, shall give it a try. Like Vidar, I have previously requested the filters fitted into a lens cap kit, as advertised by a chap in the US on ebay, but without any luck yet, apparently he's snowed under with work.

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