Re: Infrared 16mm & other stuff

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

On 22 Jul 96 at 22:57, Rick Ferncase wrote:

> Does anyone know the availablility of infrared film in the 16mm movie gauge?
> 
> About fifteen years ago I was interested in experimenting with such a film
> and contacted Eastman Kodak.  I found that I could special order a giant
> batch, but that was the only way that Kodak would supply this special stock
> (even the film appeared in their catalog).  This was prohibitively
> expensive to spend several thousand dollars on a large batch, so I forgot
> about it.
> 
> Now I am interested in this again and wondered if anyone any information
> about 16mm infared film.

AFAIK you can still order odd sizes only in large batches.

I've seen this subject popping up in the panorama list as well, in
respect with the 10" Circut film. For that film Kodak does make one
or two emulsions (whatever they are making at a given time it
seems), others need a minimum batch. 

You missed one of my earlier postings, in which I dreamed of a 
OmniMax motion picture panorama film shot on 70mm. Hovering through 
the jungle, over castles and through grave yards....
<dream mode off>

BTW, I find it hard to believe the military never used long roll 
perforated IR films for motion picture use, both HIE and IE. 
Perhaps you just have to put your name on the list, and wait till 
they make a new order.
Mmm....wouldn't it be more easy, perhaps even more economical to use 
35mm equipment (this size is still common in cinemas, right?).

Maybe we should stick heads together and make a joined purchase....
How many kilometres of film do you get for thousands of dollars 
anyway??....;-))

BTW2: I have been pondering about the difference between 120/220 and 
70mm....since 70mm cartridges use similar felt traps (do they at 
all?) as 35mm, they also require dark loading. Given that, I can't 
see how an IR-tight 120/220 back would be any different than a 70mm 
back. The argument of the IR-leaking paper backing only holds when 
exposing the rolls to daylight, and one should be able to prevent 
that. So the question why no HIE/IE in 120/220 exists remains....I start to 
suspect this military involvement is more important than we all 
realize. 

BTW3, about dark loading: before Andy has to jump in, I would also 
like to mention the fact that one can load HIE under fluorescent 
light. I am still not sure why, since HIE doesn't show a sensitivity 
gap in the green spectrum, but apparently this works. Perhaps the 
effect of the film carrier acting as a fiber optic/and or the leaking 
felt trap does not occur in any other spectrum than IR.
Perhaps other monochromatic/non-IR light sources would do as well.
Any comments?

 
--
Bye,

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The difference 
between men and boys
is the price of their toys

<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]

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Topic No. 24