[pure-silver] Re: (sligthly OT) Film flatness in a 4*5 holder

  • From: <C.Breukel@xxxxxxx>
  • To: <pure-silver@xxxxxxxxxxxxx>
  • Date: Wed, 4 Apr 2007 12:41:51 +0200

Hi Georges,

Thanks for the suggestion, not sure if I want to spray adhesive in my
holders though.

Best,

Cor

> -----Original Message-----
> From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-
> bounce@xxxxxxxxxxxxx] On Behalf Of Georges Giralt
> Sent: woensdag 4 april 2007 11:03
> To: pure-silver@xxxxxxxxxxxxx
> Subject: [pure-silver] Re: (sligthly OT) Film flatness in a 4*% holder
> 
> Hi !
> there is a 3M double face adhesive of quite small strengh suitable for
> your use.
> I do not remember the exact reference, but is was used in the Jobo
30x40
> cm
> borderless easel (it seems it is nt made anymore, if you need the
exact
> reference of the spare part I can provide it for you)
> You can put a stripe of this adhesive on the holder, and stick the
plan
> film to
> it when loading. It is thin enough I think not to cause problems.
> Hope this helps.
> Selon C.Breukel@xxxxxxx:
> 
> > Hi,
> >
> > I am starting to test a new prototype of an IR film from MACO (it's
made
> > in the old AGFA Geveart plant in Belgiuu it seems, instead at EFKE
in
> > Croatia). I am supposed to report results first to MACO.
> >
> > Thusfar I have only tested 1 sheet (I got only 10 sheets) and this
film
> > is on an very thin layer (a bit similair to lith film), and has also
> > very heavy curl.=20
> >
> > So the film is anywere from lying flat in the holder. (These facts
are
> > know by MACO and will be corrected once they decide to put this film
in
> > production).
> >
> > Obviously I am worried about sharpness, I seem to recall that there
is
> > not much room for depth of focus (at the film surface) as there is
room
> > at the depth of field end.
> >
> > Is that correct, ie when stopping down I can not compensate for the
lack
> > of film flatness in the holder?
> >
> > Will my final print be sharp in the middle, but get blurry towards
the
> > edges?
> >
> > The one sheet I developed and printed did seemed less sharp
compaired to
> > the Rollei Infrared sheet I exposed at the same time. But the
prototype
> > film was a bit overexposed and under developed.
> >
> > Mybe I should slide an old 4*5 flat sheet undeneath the thin film?
> >
> > Best,
> >
> > Thanks,
> >
> > Cor
> >
>
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