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CINERAMA3  
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 More options Sep 6 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: cinera...@aol.com (CINERAMA3)
Date: 1997/09/06
Subject: Latest Cinerama/Neon Ad

From the full page Cinerama/Neon ad in the latest "The Big Reel", I excerpt:

"What would we do if we could sell stock? With $50K, we could continue
showing Cinerama every 3rd weekend of the month."

"With $700K, we could restore and show all 7 titles made in 3-projector"
(This seems astoundingly low to me, especially if you're talking a "Bob
Harris-style" of restoration, which I assume the're not.)

"With $4 Mil. we could buy an old Sears bldg. downtown and build a
permanent Wide-Screen & Cinerama museum, showing Cinerama every day of the
year, and 70mm, 3-D, silent, foreign.....have a cafe for film
buffs......constant festivals year round......"

Well. I've pretty much convinced myself that to make this revival a solid
moneymaker and to realize any form of these plans, they've got to take this
baby on the road, to major destination cities, i.e. New York and L. A., at
least. Very, very difficult. But impossible? Quoting the most intriguing
paragraph in the ad:

"If we can take it on the road next year it will cost $250,000 per city to
do it for 2 months. We are not selling any equipment or film but may work
with others to do fundraisers for other cinemas if our costs are covered up
front."

Wow!! Does that $250K figure include the necessary modifications to a
theater, or not? (Rhetorical question.) Could "fundraisers for other
cinemas" mean an historic theater in need of renovation? Or a defunct movie
palace, with an interest group just waiting for something like this with
which to launch a rescue? Or, dare we dream, an ex-Cinerama palace or Super
Cinerama theater?

Don't wake me up. This is a good one!!
Mike Kraus


 
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Discussion subject changed to "Film Restoration Was Re: Latest Cinerama/Neon Ad" by Scott Norwood
Scott Norwood  
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 More options Sep 6 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: snorw...@redballoon.net (Scott Norwood)
Date: 1997/09/06
Subject: Film Restoration Was Re: Latest Cinerama/Neon Ad

In article <19970906002901.UAA16...@ladder02.news.aol.com>,

CINERAMA3 <cinera...@aol.com> wrote:

>From the full page Cinerama/Neon ad in the latest "The Big Reel", I excerpt:

>"What would we do if we could sell stock? With $50K, we could continue
>showing Cinerama every 3rd weekend of the month."

>"With $700K, we could restore and show all 7 titles made in 3-projector"
>(This seems astoundingly low to me, especially if you're talking a "Bob
>Harris-style" of restoration, which I assume the're not.)

OK, then, suppose cost weren't a major issue; what would it take (in the
way of time, money, and manpower) to do a complete and full restoration
of even one of the Cinerama films in order to preserve top-quality film
and sound elements for the next hundred years?  Presumably, it would be
well over the million-doller figure per feature, but I'd be interested
in more specific breakdowns of costs and procedures.  Presumably this
would entail putting the original negatives into top shape, replacing
missing or damaged sections with the best available elements, and then
making 3-strip ESTAR y/c/m separations, and, likely, many other tasks.

--
Scott Norwood:  snorw...@nyx.net, snorw...@redballoon.net, sen...@mail.wm.edu
Cool Home Page:  http://www.redballoon.net/
Lame Quote:  Penguins?  In Snack Canyon?


 
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CINERAMA3  
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 More options Sep 6 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: cinera...@aol.com (CINERAMA3)
Date: 1997/09/06
Subject: Re: Film Restoration Was Re: Latest Cinerama/Neon Ad

>OK, then, suppose cost weren't a major issue; what would it take (in the
>way of time, money, and manpower) to do a complete and full restoration
>of even one of the Cinerama films in order to preserve top-quality film
>and sound elements for the next hundred years?  Presumably, it would be
>well over the million-doller figure per feature, but I'd be interested
>in more specific breakdowns of costs and procedures.  Presumably this
>would entail putting the original negatives into top shape, replacing
>missing or damaged sections with the best available elements, and then
>making 3-strip ESTAR y/c/m separations, and, likely, many other tasks.

Right. That's how I would describe a "Robert Harris-style" restoration.
And from what I've heard, a million bucks per feature is about right.
From what I've gathered, it seems Mr. Harris spends a lot of time and
energy just researching and finding the various film elements of the films
he's restored. John Harvey is a huge plus here, as he probably knows where
95% of the Cinerama elements are.
At $100K per feature, they're probably just talking about a reprint from
the camera negatives. Still, that would be a good start on a package of
films that they could take on the road and raise funds with.

Mike Kraus


 
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Discussion subject changed to "Latest Cinerama/Neon Ad" by Eric Carter
Eric Carter  
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 More options Sep 6 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: "Eric Carter" <egcar...@dti.net>
Date: 1997/09/06
Subject: Re: Latest Cinerama/Neon Ad

 The elements of the three camera Cinerama films are apparently in fine
shape.  They don't require
a restoration ala LOA or SPARTACUS.   What they need are newly struck
prints!    When I went to
the New Neon a year ago, they said the cost would be about $100,000 per
picture....if they strike multiple prints
per picture, then economies of scale cut in.

-EC
Eric Carter

Eric_Car...@compuserve.com
"All the releases all the time"
http://home.dti.net/egcarter

CINERAMA3 wrote in article
<19970906002901.UAA16...@ladder02.news.aol.com>...


 
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Discussion subject changed to "Color Film Restoration, Was Re: Film Restoration" by Frank Wylie
Frank Wylie  
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 More options Sep 7 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: fwy...@infinet.com (Frank Wylie)
Date: 1997/09/07
Subject: Color Film Restoration, Was Re: Film Restoration

snorw...@redballoon.net (Scott Norwood) wrote:

>OK, then, suppose cost weren't a major issue; what would it take (in the
>way of time, money, and manpower) to do a complete and full restoration
>of even one of the Cinerama films in order to preserve top-quality film
>and sound elements for the next hundred years?  

As there is no agreed standard as how to preserve a motion picture,
you've got a lot of variables to deal with.  Each lab has their own
favored way of dealing with restoration.  The only way to generate a
meaningful estimate would be to coordinate the restoration with a
specific lab, or build your own lab and follow your own guidelines.  

>Presumably, it would be
>well over the million-doller figure per feature, but I'd be interested
>in more specific breakdowns of costs and procedures.  Presumably this
>would entail putting the original negatives into top shape, replacing
>missing or damaged sections with the best available elements, and then
>making 3-strip ESTAR y/c/m separations, and, likely, many other tasks.

Color separations on B&W stock is rapidly loosing support in the
archive community for a number of reasons;  the biggest being grain
problems and dimensional problems.  Even with a ESTAR-based stock, the
grain always comes back to be a problem.  

It appears the latest way of thinking is to produce your preservation
masters on the latest generation of low-fade stocks and place them in
dark, near-freezing, long-term storage.  

I'm a huge B&W fan, but even I know that the grain structure of modern
b&w stocks (HA!, the formulas haven't changed in YEARS!) won't cut the
grain problem.  Do a CYM sep. master and your resulting recombined
dupe neg could possibly look like a Lumiere Autochrome.

One way of doing it is:

1.  Inspect and repair all of the original negatives and existing
prints available.  Carefully log damaged areas and generate a
preliminary patch-log of alternate footage.

2.  Strike color interpositives of the orginal negatives and dupe
negative sections of the prints to be used as patch footage.  Use a
wet-gate, total immersion, continuous contact printer for the above to
minimize scratches and abrasions.

3.  Now, strike a work print from the original negatives and the dupe
neg sections;  use these to choose the best material and assemble the
check-print out of these elements.

4.  Once satisfied with the physical state of the chosen material,
strike color interpositive sections from the dupe neg patch sections
and assemble the new color interpositive and strike a dupe negative
from that.

5.  Time the new dupe neg and pull-off a check print.  If all is well,
strike an archival color interpositive from the dupe neg.

6.  As far as the sound is concerned;  you'll have to record each
track onto some medium for comparison, editing and remastering onto
multi-track 35mm mag.  In any event, I would suggest you keep firm
control over the transfers and avoid those techs who want to
"tweak-it-up a bit".  IMHO, commercial, digital "Sound Restoration"
services tend to ruin a soundtrack by removing all the higher-end
harmonics in an attempt to get rid of hiss.  Do yourself a favor and
find an old sound engineer who is a mag expert and avoid the digital
realm.

Assuming that the original is Eastman color neg, you're going to have
color fade; so you'll have to decide how you are going to handle that.
The above proceedure assumes that the negative is not so far gone as
to preclude color-correction via normal timing methods.  If the Yellow
record on the original negative is almost gone;  you have to take
another route.

The May 1997 issue of the SMPTE Journal has an article by Peter Kuban
(Star Wars, VCE, etc) outlining the "RCI" process of color
restoration, entirely within the photo-chemical realm, that he used to
restore atomic bomb blast footage for his film, "Trinity & Beyond".
You have to take the film several generations to effect the
correction, but it seems to be a "do-able" process for a small lab
(with one glaring exception when it comes to Cinerama; more later);
not like digital restoration, which is far beyond the reach of a
low-budget restoration.

Assuming you have a printable negative,  the basic process goes like
this:  take the original neg and strike both a LAD (Laboratory Aim
Density) Color Interpositive and a B&W autopositive or reversal print.
No attempt is made to correct color when striking the LAD C.I., as he
claims this is counter-productive at this point.  

Setting this aside for the moment...

The autopositive is of very low density and is used to reconstitute
the blue image record;  theory being that the autopositive (5360 Kodak
Direct MP processed in D-97) stock is sensitive only to the green and
blue light (ortho) of the NEGATIVE being copied , and when combined
with the original negative in an optical printer,  creates a
witholding matte for the cyan (red) and magenta (green) colors of the
original negative;  allowing the blue (yellow) light to pass through
the clear areas.  The above combination is optically printed to a
short-pitched (B&H .1866), pin-registered, color print stock copy.

This "yellow" mask is recombined on a two-head optical printer with
the LAD interpositive to create the new internegative.

According to Kuban, the real tricky part of the RCI process is
determining the optimum density of the yellow mask on a scene-by-scene
basis.  Color correction of the blue record in the original negative
is in direct relation to the density of the autopositive (how much
cyan and magenta is subtracted) to the over-all color balance of the
scene.

Mess-up here, and you have to go back to generate a new autopositive,
new yellow mask and strike a new internegative.  This could be very
costly.  

One serious drawback to this process is the extra contrast that
optical printing introduces with each generation, but that would have
to be accepted.

Now all of this is fine and good, but you now have the problem of
locating a 2-head optical printer with a 6-perf pulldown to composite
your elements.  Anyone know it the original Cinerama equipment
survives?  Or, was there EVER a Cinerama optical printer?

Cost?

You cannot make any reasonable judgement-calls on that until you know
if an optical printer exists that can work in the native 6-perf 35mm
format of Cinerama.  If not, you may have to work with 65mm or a
Vistavision printer.

The most cost-effective means would be to find a way to avoid optical
printing at-all;  stick to 35mm continuous-contact printing that does
not require a specific frameline and gives the added benefit of
lower-contrast build-up per each generation.  

Wow, this was far too long.

I should have had a beer instead.  

Later,


 
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Mark R. Baldock  
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 More options Sep 7 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: mrbal...@comp.brad.ac.uk (Mark R. Baldock)
Date: 1997/09/07
Subject: Re: Color Film Restoration, Was Re: Film Restoration

Frank Wylie (fwy...@infinet.com) wrote:

: As there is no agreed standard as how to preserve a motion picture,
: you've got a lot of variables to deal with.  Each lab has their own
: favored way of dealing with restoration.  The only way to generate a
: meaningful estimate would be to coordinate the restoration with a
: specific lab, or build your own lab and follow your own guidelines.  

: >Presumably, it would be
: >well over the million-doller figure per feature, but I'd be interested
: >in more specific breakdowns of costs and procedures.  Presumably this
: >would entail putting the original negatives into top shape, replacing
: >missing or damaged sections with the best available elements, and then
: >making 3-strip ESTAR y/c/m separations, and, likely, many other tasks.

: Color separations on B&W stock is rapidly loosing support in the
: archive community for a number of reasons;  the biggest being grain
: problems and dimensional problems.  Even with a ESTAR-based stock, the
: grain always comes back to be a problem.  

: It appears the latest way of thinking is to produce your preservation
: masters on the latest generation of low-fade stocks and place them in
: dark, near-freezing, long-term storage.  

--

        I did some work for the now defunct Entertec Cinerama restoration
project. One of the things I looked at was attempting to do significant
parts of it in the digital domain. A full restoration today, using current
technology, say Kodak Cineon or Quantel Domino, would have come out at
at well over $10M per Cinerama feature. Custom software would have been
necessary to deal with Cinerama's unusual format. Not really economically
viable. There seemed to be no real problem with getting the original
material into the digital domain. The sticking point was with finding a
6-perf capable film recorder. Figures of around $70,000 ~ $150,000 are
for a straight reprint with varying degrees of colour grading (timing)/
wet gate options etc.

        I have not inspected the negatives personally, so I can only
comment on what I have been told and Bradford's print of "This Is
Cinerama" which was struck from the original neg. in 1993. So far as I
know the Cinerama Inc. negs are in reasonably good condition. Ditto the
MGM/Cinerama negs at Turner. If Bradford's TIC is anything to go by
reprinting will need careful grading (timing) but it is most certainly
do-able.  

        As part of my PhD research into computer aided film restoration,
I have been investigating a mathematical colour fading model developed at
the University of Basel, Switzerland. This employs a linear bleach equation
with twelve coefficients that describe how the cyan, magenta and yellow
dyes have faded and their inter-relationships (for example, one layer
masking another). In the Swiss research they used controlled,
accelerated fading to test the model. In a real restoration you need to
find those twelve numbers when you just have the faded film in front of
you and do not necessarily know the precise fading conditions. There
are some interesting possibilities, but I'm still working on it.

        Something else considered was completing Wentworth Fling's work
on the 16-perf horizontal Cinerama camera (Super Cinerama proper, if you
like). While it is probably not too useful today as an originating medium
it would be quite useful for long term archiving of Cinerama. By copying
the three-strip images onto a single piece of film, you effectively
avoid future differential shrinkage problems. It probably also makes
it easier to strike 70mm and 35mm anamorphic prints for special
purposes, documentaries etc.

        Mark.           (Email: m.r.bald...@bradford.ac.uk)

        Film formats: http://www.comp.brad.ac.uk/research/GIP/film.html


 
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ROLANDROLA  
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 More options Sep 7 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: rolandr...@aol.com (ROLANDROLA)
Date: 1997/09/07
Subject: Re: Color Film Restoration, Was Re: Film Restoration

>I did some work for the now defunct Entertec Cinerama  restoration
>project.

Mark,

Do you know if Entertec still plans to do a theme park in Orlando?  Thanks.

Roland


 
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Wide Gauge  
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 More options Sep 7 1997, 3:00 am
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From: widega...@aol.com (Wide Gauge)
Date: 1997/09/07
Subject: Re: Color Film Restoration, Was Re: Film Restoration

In article <3411dd4e.21871...@news.infinet.com>, fwy...@infinet.com (Frank

Wylie) writes:
>The May 1997 issue of the SMPTE Journal has an article by Peter Kuban
>(Star Wars, VCE, etc)

I think the correct spelling is Kuran.

Scott Marshall
Editor, Wide Gauge Film and Video Monthly
http://members.aol.com/widegauge/


 
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Steve Kraus  
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 More options Sep 7 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: Steve Kraus <gkr...@SPAMBLOCKgovst.edu>
Date: 1997/09/07
Subject: Re: Color Film Restoration, Was Re: Film Restoration

Mark R. Baldock wrote:
> Something else considered was completing Wentworth Fling's work
> on the 16-perf horizontal Cinerama camera (Super Cinerama proper, if you
> like). While it is probably not too useful today as an originating medium
> it would be quite useful for long term archiving of Cinerama. By copying
> the three-strip images onto a single piece of film, you effectively
> avoid future differential shrinkage problems. It probably also makes
> it easier to strike 70mm and 35mm anamorphic prints for special
> purposes, documentaries etc.

Why not just print the three frames across the lower portion of an
IMAX frame?  Sure there would be some wasted frame area but much easier
and less expensive than devising an entirely new format.  A print
made in this format could play the OMNIMAX ("IMAX DOME") venues in
a fairly good imitation of Cinerama, too.

 
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Mark R. Baldock  
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 More options Sep 8 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: mrbal...@comp.brad.ac.uk (Mark R. Baldock)
Date: 1997/09/08
Subject: Re: Color Film Restoration, Was Re: Film Restoration

Steve Kraus (gkr...@SPAMBLOCKgovst.edu) wrote:

: Why not just print the three frames across the lower portion of an
: IMAX frame?  Sure there would be some wasted frame area but much easier
: and less expensive than devising an entirely new format.  A print
: made in this format could play the OMNIMAX ("IMAX DOME") venues in
: a fairly good imitation of Cinerama, too.

--

        Filmed in Cinerama, presented in OMNIMAX. Hmmmm.... Yes, I
guess that would be a way to practically generate the kind of market
necessary to support a full restoration.

        Mark.           (Email: m.r.bald...@bradford.ac.uk)

        Film formats: http://www.comp.brad.ac.uk/research/GIP/film.html


 
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Mark R. Baldock  
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 More options Sep 8 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: mrbal...@comp.brad.ac.uk (Mark R. Baldock)
Date: 1997/09/08
Subject: Re: Color Film Restoration, Was Re: Film Restoration

ROLANDROLA (rolandr...@aol.com) wrote:

: Do you know if Entertec still plans to do a theme park in Orlando?  Thanks.

--

        I have been requested by the Information Officer at Entertec
Development Corporation to point out that while they are no longer
continuing a Cinerama restoration project themselves, the concurrent
plans for the theme park are, in their words,

        "VERY MUCH alive and well and in full development in the U.S."

        I look forward, with interest, to future announcements from
Entertec about the project.

        Mark.           (Email: m.r.bald...@bradford.ac.uk)

        Film formats: http://www.comp.brad.ac.uk/research/GIP/film.html


 
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Scott Norwood  
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 More options Sep 8 1997, 3:00 am
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From: snorw...@redballoon.net (Scott Norwood)
Date: 1997/09/08
Subject: Re: Color Film Restoration, Was Re: Film Restoration

In article <19970908213601.RAA28...@ladder01.news.aol.com>,

Wouldn't there have had to be some type of 6-perf optical printer in order
to produce the 65mm neg -> 3-strip/6-perf positive required for certain
sections of HTWWW?  Or is there some other method for converting between
the two essentially incompatible formats?

--
Scott Norwood:  snorw...@nyx.net, snorw...@redballoon.net, sen...@mail.wm.edu
Cool Home Page:  http://www.redballoon.net/
Lame Quote:  Penguins?  In Snack Canyon?


 
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CINERAMA3  
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 More options Sep 8 1997, 3:00 am
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From: cinera...@aol.com (CINERAMA3)
Date: 1997/09/08
Subject: Re: Color Film Restoration, Was Re: Film Restoration

In article <3411dd4e.21871...@news.infinet.com>, fwy...@infinet.com (Frank

Wylie) writes:
>Now all of this is fine and good, but you now have the problem of
>locating a 2-head optical printer with a 6-perf pulldown to composite
>your elements.  Anyone know it the original Cinerama equipment
>survives?  Or, was there EVER a Cinerama optical printer?

I'm probably full of poop here, but don't most optical printers have
interchangable movements in them? Pin-registered "Bell & Howell" movements?
I've read that you could get these in various "sizes" to compensate for
film shrinkage. Could not one of these be modified for Cinerama 6-perf?
Just asking.
Mike Kraus

 
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Discussion subject changed to "Cinerama Restoration (was ..." by Morgan Montague
Morgan Montague  
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 More options Sep 8 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: Morgan Montague <*tige...@ix.netcom.com>
Date: 1997/09/08
Subject: Cinerama Restoration (was ...

The ASC Manual, 3rd Edition from 1969:

pg. 584

gave the the following aperature information:

CAMERA ASPECT RATIO 2.59 TO 1

Aperature Dimensions for the CAMERA:  
Width=1.014"  runs into perforations
Height=1.116"

Aperature Dimensions for the OPTICAL PRINTER:
Width=0.996"       Special Acme Head 0.985
Height=1.115"

Aperature of Projector
Width:  Because of vignetting "gigolos" projector aperature width is
meaningless.
        There is no specification.
Height=1.088

        We know there was at least 1 optical printer for Cinerama.  Most likely
it was at Technicolor labs.  There may bave been a second printer made
for the
Cinemiracle folks since they went the Eastmancolor route.  Just a WAG!

Tiger, in full deminsional stereo.

PS:  The Cinerama Theatre in Seattle is currently showing "Contact" in
DTS on their
huge honkin' screen! Let's hope they remain open for a Harvey/Smith
Roadshow.


 
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Mark R. Baldock  
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 More options Sep 9 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: mrbal...@comp.brad.ac.uk (Mark R. Baldock)
Date: 1997/09/09
Subject: Re: Cinerama Restoration (was ...

Morgan Montague (*tige...@ix.netcom.com) wrote:

:       We know there was at least 1 optical printer for Cinerama.  Most likely
: it was at Technicolor labs.  There may bave been a second printer made
: for the
: Cinemiracle folks since they went the Eastmancolor route.  Just a WAG!

--

        The Cinemiracle printer is briefly described in the Motion Picture
Herald, April 12, 1958, page 23:

        "In the printer the overlap area is vignetted, or "feathered." This is
done by printing a strip, substantially in the width of the overlap, of
graduated opacity on the positive film - on the inside of each side-panel
print, on both sides of the middle print, with graduation - call it a series
of grays, from dark to light proceeding from the perforations inward. The
positive runs through a "feathering head" to be exposed to this vignetting
image, then continues on to the picture head. The vignetting process involves
shifting the feathering image, which is on glass, according to focus of
field. This is done automatically from a "cued" punch tape."

        Mark.           (Email: m.r.bald...@bradford.ac.uk)

        Film formats: http://www.comp.brad.ac.uk/research/GIP/film.html


 
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ROLANDROLA  
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 More options Sep 9 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: rolandr...@aol.com (ROLANDROLA)
Date: 1997/09/09
Subject: Re: Cinerama Restoration (was ...

I  thought I read somewhere that Cinerama Inc. will be restoring (whatever
they mean by restoring)  the films they have. Has anybody contacted them to
confirm this? Where will they show the films? Are they working with John
Harvey and friends?

Roland Lataille


 
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William Kucharski  
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 More options Sep 10 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: kucha...@nessie.dr.lucent.com (William Kucharski)
Date: 1997/09/10
Subject: Re: Cinerama Restoration (was ...

While reading article <19970909212601.RAA22...@ladder02.news.aol.com>, I noticed
that rolandr...@aol.com (ROLANDROLA) said the following:
 >I  thought I read somewhere that Cinerama Inc. will be restoring (whatever
 >they mean by restoring)  the films they have. Has anybody contacted them to
 >confirm this? Where will they show the films? Are they working with John
 >Harvey and friends?

Pacific Theatres, the current owners of Cinerama, have said they have NO plans
to restore the format or any of the films.
--
| William Kucharski, Lucent Technologies     | The opinions expressed herein
| Internet:  kucha...@drmail.dr.lucent.com   | are MINE alone, and are CERTAINLY
| UUCP:  You're kidding, right?  Ham:  N0OKQ | NOT those of Lucent Technologies.
| President, "Just the Ten of Us" Fan Club   |   "Megadittos from Denver, CO"


 
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Discussion subject changed to "Color Film Restoration, Was Re: Film Restoration" by Steve Kraus
Steve Kraus  
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 More options Sep 14 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: Steve Kraus <gkr...@SPAMBLOCKgovst.edu>
Date: 1997/09/14
Subject: Re: Color Film Restoration, Was Re: Film Restoration

CINERAMA3 wrote:
> I'm probably full of poop here, but don't most optical printers have
> interchangable movements in them? Pin-registered "Bell & Howell" movements?
> I've read that you could get these in various "sizes" to compensate for
> film shrinkage. Could not one of these be modified for Cinerama 6-perf?

Don't know about shrinkage compensation or if it's even needed with
the fixed pin registration on a Unit-I shuttle but you're right
a 6-perf movement should drop right in.  If one doesn't exist anymore
it could be built relatively easily by anyone who does that sort
of precision machining.  They do not appear to be particularly
complex.  That's the beauty of it, the moving parts do not require
the high degree of precision of a regular camera movement.

 
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Frank Wylie  
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 More options Sep 14 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: fwy...@infinet.com (Frank Wylie)
Date: 1997/09/14
Subject: Re: Color Film Restoration, Was Re: Film Restoration

Steve Kraus <gkr...@SPAMBLOCKgovst.edu> wrote:
>Don't know about shrinkage compensation or if it's even needed with
>the fixed pin registration on a Unit-I shuttle but you're right
>a 6-perf movement should drop right in.  

Afraid not.  You don't just "drop-in" a 6-perf movement into a hole
designed for a 4-perf movement.  The Acme and Oxberry printer heads
rely on a cam for proper shuttle movement (stroke, etc.).

Most Acme and Oxberry optical printers DO take interchangeable
movements, but the cam MUST have a lobe for the format you are
shooting!  Our Oxberry can do R8, S8, 16mm, 28mm and 35mm (4-perf),
but cannot do any extended formats as the cam cannot make a long
enough throw.  The only reason it can do 28mm is that we had the cam
lobe for the 35mm movement seperated from the face of the cam and is
adjustable toward and away from the center of rotation.

It would be easier to "bolt-on" a 6-perf head;  and while you're at
it, bolt on a 6-perf camera, cause they use exactly the same movement.
While you're at it, get new lenses, cause the old ones won't cover the
proper image area.  (think about it;  measure that diagonal)

>If one doesn't exist anymore
>it could be built relatively easily by anyone who does that sort
>of precision machining.  They do not appear to be particularly
>complex.  

The number of machinists who truly understand the movement, have
experience working on it, and could make the reproduction with any
degree of skill is very small and it shouldn't take, oh, over a year
to get it done.  We have been waiting for over a year for an
adjustable-stroke, 35mm wet gate for an Oxberry.  

You do our cine-ancestors a grave injustice by dismissing their work.
It didn't take 100 years to perfect film just because people were
lazy;  it took that long to perfect the movements and the machining
processes.

>That's the beauty of it, the moving parts do not require
>the high degree of precision of a regular camera movement.

Steve!  Wake up!  You are REPHOTOGRAPHING the image!  You do need a
movement at least as steady as a pin registered camera movement.  You
also need gates that register on the same side as the camera original
was registered;  i.e., if the camera registered below the gate (as in
a Mitchell), the optical printer needs to register ABOVE the frame.
If the camera registered above the gate (b&H 2709) then the printer
head needs to register BELOW the gate.

I'm not trying to be difficult here, I'd like to help as much as
possible, but PLEASE research the problem before making blanket
statements of ease.

Frank Wylie


 
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Steve Kraus  
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 More options Sep 15 1997, 3:00 am
Newsgroups: rec.arts.movies.tech
From: Steve Kraus <gkr...@SPAMBLOCKgovst.edu>
Date: 1997/09/15
Subject: Re: Color Film Restoration, Was Re: Film Restoration

Frank Wylie wrote:
> Afraid not.  You don't just "drop-in" a 6-perf movement into a hole
> designed for a 4-perf movement.  The Acme and Oxberry printer heads
> rely on a cam for proper shuttle movement (stroke, etc.).

Interesting.  A friend has a couple of fixed pin movements sitting
on the shelf and motion is imparted to them via a rotating shaft.
Turn the shaft and the travel pin goes up and down and the film
channel moves back and forth.  Therefore as the entire mechanism
is contained within the enclosed movement (easily held in the palm
of one's hand) it was not such an enormous leap to guess that a
one designed for 6-perf ought to be able to be dropped in whereever
these came out of.  I am not a camera or optical printer tech so
I don't know how these compare to the movements you are familiar
with.  Obviously what you've got is quite different from the ones
I have seen.    

> You do our cine-ancestors a grave injustice by dismissing their work.
> It didn't take 100 years to perfect film just because people were
> lazy;  it took that long to perfect the movements and the machining
> processes.

On the contrary.  I stand in awe of the fixed pin (2709) movement
which as far as I know is unsurpassed in precision some 70 to 80
years after its invention, at least as far as purely mechanical
movements are concerned.  Someone else will fill us in on the exact
year it was introduced but I suspect it was in the 20's perhaps even
earlier.  That puts it 20-30 years after the dawn of cinema, not 100
as you suggest.  That it came along so early and has yet to be
suppassed is all the more reason to be in awe of it.

>>That's the beauty of it, the moving parts do not require
>>the high degree of precision of a regular camera movement.

> Steve!  Wake up!  You are REPHOTOGRAPHING the image!  You do need a
> movement at least as steady as a pin registered camera movement.

Frank!  Wake up!  You need to REREAD my statement!  I didn't say
you don't need a precise movement.  I stated that the MOVING parts
don't need the high degree of precision because the thing that
locates the film for exposure, the fixed pins are, as the name
implies, FIXED.  They must be very precise but are NOT moving
parts which is all that my statement addressed.  The parts that do
move are only concerned with lifting the film off the pins, moving
it, and placing it back on the pins.  The ultra ultra ultra degree
of precision that is needed on a Mitchell or similar type of
movement isn't really required.  Tolerances there will affect
image registration; on a 2709 they do not.

 
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