Re: tiny streaks in EIR

[Michel Wurtz <mw@xxxxxxx>]

"Barry B. Bean" wrote:
> 
> I've had two rolls of EIR returned with tiny red streaks  and spots
> on several exposures. The streaks are always running lengthwise with
> the film, and are always a similar red to the Green/red IR shift.
> They primarily show up in underexposed frames, and may possibly be in
> normal or over exposed frames, but simply not be noticeable. I've
> been storing my EIR in the freezer, giving appropriate thaw times,
> shooting in a recently serviced OM-1n (that shows no problems with
> other films), and having it developed and mounted by a pro lab in
> Memphis that is familiar with EIR (they saved me from ruining my
> first roll) and HIE.
> 
> Is this problem related to the infamous pin prick problems LF users
> were having with their IR emulsions, or is there a simpler answer?

If they are really tiny, it may be a mechanical problem : if you
scratch an EIR slide on the emulsion slide, you may have some red
dots.  The emulsion seems also not very hard...
--
Michel Wurtz
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