Re: HIE in 120/220

[PeteScherm@xxxxxxx]

Kodak did make 120 size IR short films (8 or 12 - can't remember - of the 
645-type format) during the 40's, but these had an anti-halation coating, 
apparently, and thus eliminated the worry about light-tightness along the 
edges.  The stock answer that Kodak gives is the difficulty of keeping the 
light from "piping" through the entire film if a perfect seal between the 
spool ends and the backing paper cannot be maintained.  I don't know if that 
makes sense, but the net result is:  No anti-halation coating  equals too 
risky a situation with roll film.  I would guess that 220 would be even less 
likely.

Pete Schermerhorn, in the glorious Berkshire hills of western Massachusetts
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