ir_x-pan.htm
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Infrared film fogging in the Hasselblad X-pan
Hasselblad X-Pan IR-LED film counter:
From: "Willem-Jan Markerink"
To: eos@avocado.pc.helsinki.fi
Date sent: Sat, 3 Oct 1998 23:00:31 +0000
Subject: IR-LED film counter on Hassy X-Pan
Copies to: infrared@a1.nl
Send reply to: infrared@a1.nl
An interesting snip from a Hasseblad X-Pan report:
xxxxxxxxxxxxxxxxxxxxxxxx
Switch from 24x36 to 24x65 in mid roll and it repositions the film to
insure consistant frame spacing and no overlap. film movement is
controled by infrared sprocket counter but Hassy claims it won't fog
infrared film.
xxxxxxxxxxxxx
So it seems at least ONE manufacturer has managed to avoid the
problems with IR-LED film counters....
--
Bye,
Willem-Jan Markerink
The desire to understand
is sometimes far less intelligent than
the inability to understand
[note: 'a-one' & 'en-el'!]
Date sent: Sun, 04 Oct 1998 19:34:34 -0600
From: Dan Gordon
Subject: Re: IR-LED film counter on Hassy X-Pan
To: infrared@a1.nl
Organization: sait
Send reply to: infrared@a1.nl
Hello Everyone,
I had the chance to shoot the new Hassleblad XPAN camera on Sept. 24
courtesy of our dealer here in Calgary. I loaded a roll of HIE in a
dark bag, the auto take up was a bit fussy, I think due to the thin
emulsion of HIE. No other problems as I exposed a full roll- almost all
at the panoramic setting ( 24 x 65 mm). The film counter does indeed
fog the bottom sproket holes along the entire film length, there is only
a small amount of fog that crosses into the image area - probably would
be cropped in most cases. The camera I used was a proto type.
Dan Gordon
Date sent: Mon, 05 Oct 1998 14:22:57 -0600
From: Dan Gordon
Subject: Re: IR-LED film counter on Hassy XPAN
To: infrared@a1.nl
Organization: sait
Send reply to: infrared@a1.nl
Willem,
I don't have a scanner but I'll see if I can come up with something.
Two minor corrections to my previous post: I meant to say - thin film
base rather than thin emulsion & of course, the fogging is not in the
sprocket holes but on the film rebate surrounding . I only had time to
try the 45 mm lens but was very pleased with the results. I was happy
to see that the lens has an IR focus mark.
Cheers! Dan Gordon
Another data point on the Minolta 500si:
Date sent: Mon, 05 Oct 1998 11:56:43 -0500
To: infrared@a1.nl
From: "David J. Carlyon"
Subject: Re: IR-LED film counter on Hassy X-Pan
Send reply to: infrared@a1.nl
>Dan, can you put a full-size scan on the web?
>Seems as if Hasselblad hasn't done a better job technically, but they
>just avoided the unnecessary precaution that Canon, Minolta and
>Contax apply in their manual.
With my Minolta 500si, HIE is fogged horribly along the bottom of the negs,
well into the image area. It appears in the form of vignetting. (There are
some examples in the infrared page of my photo gallery.) I took a piece of
electrical tape, and covered about half of the IR film counter, and the
fogging still occurs on about half the sprocket holes - a negligible amount
of fogging might still occur in the image area, but it's no longer
noticable (maybe it's simply not there, or the graininess of the film
disguises it anyway). I don't think I have any scans uploaded with the
reduced fogging - maybe I'll do that later.
Hasselblad probably just minimized the fogging, by maybe making the thing
smaller, or positioning it further from the image area.
David
http://scc.net/~david/Photography/
Date sent: Fri, 19 Feb 1999 12:49:43 -0600
From: Wayne Loucas
Organization: dcccd
To: w.j.markerink@a1.nl
Subject: X-Pan
Just a follow-up to some of the postings on the Hasselblad X-Pan
camera. I waited months to be able to purchase this camera. It was the
perfect combination of features for the IR photography I wanted to
pursue. Prior to buying the camera, I called hasselblad to ask
specifically about their claim of use with IR film. They assured me
that only some edge fog would occur which would not effect the image.
After shooting my first roll of HIE I new there was a problem. There
was indeed edge fog which I could have lived with, but in addition was a
concentration of a fog spot which did infiltrate the integrity of the
image. Yes, It could be cropped, but I'm used to printing full frame.
I called Hasselblad and FAXed them a copy of the film. They proceeded
to run their own test and came up with the same results. The
representative claimed they did not know it would do that (sorry, hard
to believe) and that they would send out press releases stating the
problem. He contacted Japan, and was told that there was nothing they
could do. Needless to say, I am very disappointed based on their claim
and my subsequent call to verify before purchasing.
It is a beautiful camera...I wish I could use it without sacrificing any
image area.
To: w.j.markerink@a1.nl
From: bboard@photo.net
Subject: Response to Infrared films with Hasselblad XPan???
Date sent: Fri, 12 Nov 1999 00:43:41 GMT
Send reply to: nickf@cup.hp.com
I bought the XPAN camera specifically to do infared (Kodak) panoramics. A month
later I found out that my instructor's husband had tried to use KHSI in his XPAN
and it did NOT work. So I quickly tested mine and the verdict was that infared
sensor MOSTLY fogged only the sprocket areas. However, on my test roll, the
fogging HAD extended 1-2mm in 5 areas of the film. I returned the camera
immediatedly!
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