RE: Question on changing bag--the epilogue

[David Riecks <riecks@xxxxxxxxxxxxxx>]

As promised heres my update on the Harrison Changing bag I purchased in
early April of this year.

I had noticed some slight fogging on the beginning of several of the b&w
infrared rolls that I loaded in full afternoon sunlight while on vacation in
Arizona. Some that I had loaded in the changing bag but in a darkened room
at night did not have this telltale fogging.

I didn't want to be premature in my report so I waited till I could test this.

I had two rolls of Kodak B&W infrared (one which was not quite finished) to
develop. I loaded the first twenty four frames of the roll that wasn't
finished in a darkroom. I snipped the remaining frames in half and put 1/2
in one of the black plastic canisters. The other half I put in a developing
tank and closed the lid. As a double check I took and unexposed roll of
tri-x and clipped about 4 to 6 frames from it, put 1 part in another plastic
canister and the other part in the same developing tank as the IR clip
(which I had clipped the edges so I could tell which was TX and which IR.

I put the two canisters and the developing tank in the film changing bag and
went outside in the noon day sun (Central Illinois at 12:30). I put my arms
into the changing bag and opened the developing tank and pulled each clip
strip out and held it inside of the changing bag, emulsion side up. I left
the film in the other two canisters as a check. I held the strips out for
five minutes (timed on my watch). At the end of the time I put the strips
back in the tank, removed by arms and took the whole mess inside to develop.

I developed both the Tri-x and the IR as I do normally. The strips in the
canisters were clear (base + fog). Of the strips that I held out in the
changing bag for five minutes, the Tri-X was fine (looked the same as the
one in the canister). The IR strip however, was quite fogged.

Needless to say I am quite upset. I'm certainly glad I don't shoot sheet
film, or else you'd really see me steaming.

When I get a chance I'd like to repeat this test but in some other likely
changing areas. Inside of a motel room, bathroom, normal room lights, etc.

Of the rolls that I had to change while on vacation the fogging only seems
to occur in the first couple of frames as you advance. I don't believe any
of my frames #2 were seriously damaged...and most of the frames #1 were fine
as well.

Thought some of you might be interested before plunking down $80 some
dollars for a changing bag. Not sure if these results are the same as
someone reported with the Calumet/Photoflex changing tent, but I'd be
interested to compare notes.

David

David Riecks                    *       riecks@xxxxxxxxxxxxxx  
701 W. Washington St            *                 or
Champaign, IL 61820             *       riecks@xxxxxxxxxxxxxx       
ph/fax 217-239-FOTO (3686)      *        Midwest/Chicago ASMP   
          http://ourworld.compuserve.com/homepages/riecks            

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End of Infrared-Digest V0 #525
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