Re: tiny streaks in EIR

[Clive Warren <Clive.Warren@xxxxxxxxxxxxx>]

At 6:11 pm -0600 21/3/00, 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?
>
>BBB
>-
>B.B. Bean - Have horn, will travel
>	bbbean@xxxxxxxxxxxxxx
>Peach Orchard, MO
>	http://www.beancotton.com/bbbean.shtml


Barry,

I would suspect a processing problem - return the film to the lab. and ask
them to explain the streaks and spots.


All the best,

             Clive   http://www.cocam.co.uk
                     Photographic Services, Filters and Equipment, Infrared FAQ
                            http://clive.bel-epa.com
                            Adventures in Cyberspace - Digital Art and Photos


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