Re: Bulk loading infrared

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

On 28 Jun 97 at 10:24, James Lewis/Computer Corner wrote:

> I was able to locate only one infrared emulsion that comes in bulk. That
> would be Aerographic 2424.

Nope, at least not only; Aerographic IR 2424 is either 70mm or 9.5".
(I lately saw some notes on 5" NATO spools, hope to get some stock 
codes for this one too).

35mm bulk is still called Highspeed Infrared AFAIK, with the 
following spec's:

35mm x 150ft	   417		169 4149

I believe '417' tells something about the (sprocket) configuration,
right? Or only length? Should match some other Kodak 35mm bulk
emulsion....it is somehow quite familiar....anyone have a Kodak
stock list at hand?
A different sprocket configuration should follow from this number, by 
not matching other 35mm bulk emulsions in that case. 

> Is this the same as High Speed Infrared?

2424 is indeed the same emulsion (not sure about thickness).

> Infrared sentitivity the same?

Yep. I have Kodak literature showing the same plot.
Same goes for Aerochrome IR in 70mm and 9.5" perforated, for both the 
old emulsion (still available AFAIK, for those industries relying on 
consistency) and the new emulsion (there are even two slightly 
different emulsions in those sizes according to the Kodak site).

Btw, on my homepage I have an overview of all IR-emulsions and 
formats, see URL in the footer below.

> Any unusual problems bulk loading it (other than the obvious?
> Is the pitch of the sproket holes somehow different than what we're
> accustomed to on normal 35mm cameras?

I doubt it, and certainly not for reasons of scaring off customers
who want to save some bucks....otherwise they should have done that
with all bulk emulsions. 

> It would appear that many more choices are available in HIE but that is not
> my interest.

What do you mean with more choices? Formats?

 

- -- 
Bye,

Willem-Jan Markerink


      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


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