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Michael Benveniste - 27 Sep 2004 04:26 GMT

On a 100' roll of bulk 70mm film, is the emulsion on the "inside"
surface or the "outside" surface? Given that I have to handroll
into 15' cartridges in darkness, I'd rather confess my ignorance
than to pop 80 shots and find out I got it backwards.

Thanks!

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Mike - 27 Sep 2004 05:17 GMT

should be on the inside however if in doubt moisten the tip of your finger,
the emulsion will fell tacky.

> On a 100' roll of bulk 70mm film, is the emulsion on the "inside"
> surface or the "outside" surface? Given that I have to handroll
[quoted text clipped - 7 lines]
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Dr. Georg N.Nyman - 27 Sep 2004 15:21 GMT

Emulsion is on the inside - I use 70mm color negative film myself...
Regards George Nyman

> On a 100' roll of bulk 70mm film, is the emulsion on the "inside"
> surface or the "outside" surface? Given that I have to handroll
> into 15' cartridges in darkness, I'd rather confess my ignorance
> than to pop 80 shots and find out I got it backwards.
>
> Thanks!

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Gregory Blank - 27 Sep 2004 22:29 GMT

Since Michael ask this question it has made my curious;
what emulsions are available as 70mm?

> Emulsion is on the inside - I use 70mm color negative film myself...
> Regards George Nyman
[quoted text clipped - 5 lines]
> >
> > Thanks!

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Nick Zentena - 27 Sep 2004 23:19 GMT

> Since Michael ask this question it has made my curious;
> what emulsions are available as 70mm?

IIRC Kodak supplies Portra NC but I'm not sure if that's both perforated
and unperforated. Agfa was offering it's portrait film. They list some
interesting aerial films but don't get me started on trying to order it.
Fuji I think had a portrait film and the same from Konica.

http://www.bhphotovideo.com/bnh/controller/home?A=search&Q=&a=90_631&shs=&ci=333
&ac=&Submit.x=5&Submit.y=17&Submit=Go

That's the print film B&H shows but only Portra Type II is in stock.

Oh and Kodak used to make IR film in 70mm. That is what got cut down to 120.

Nick

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Michael Benveniste - 28 Sep 2004 02:37 GMT

>Since Michael ask this question it has made my curious;
>what emulsions are available as 70mm?

In perforated stock (which is what my Pentax 645 uses), currently
there's 160NC, 400NC and various aerographic film. Supposedly VC
is available as well, but I didn't find anyone who stocks it.

Since I'm playing, I'm trying a roll of Agfa N400 PE1, which I
was able to buy for around $41.

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Phil Stripling - 27 Sep 2004 17:51 GMT

> into 15' cartridges in darkness, I'd rather confess my ignorance
> than to pop 80 shots and find out I got it backwards.

Who's doing your processing? Are they set up to do fifteen-foot lengths of
70mm film? Just curious.

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Michael Benveniste - 27 Sep 2004 20:05 GMT

> > into 15' cartridges in darkness, I'd rather confess my ignorance
> > than to pop 80 shots and find out I got it backwards.
>
> Who's doing your processing? Are they set up to do fifteen-foot lengths of
> 70mm film? Just curious.

It looks like I'm going to have to send it out. All of the labs I
tried in Boston either can't do it, cut the film to do dip and dunk
(losing an image per cut) or didn't respond to email.

Both Miller's Professional Imaging (millerslab.com) and Alfa Color
Imaging (alfacolor.com) have responded that they can still process
the 15' cartridges. There are a few labs aimed at the aerial
photography market that can also handle it, but they'll charge you
their 50' minimum price.

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