Re: filmscanners: Pre scan viewer?

["Ian Jackson" <Ian_Jackson@blueyonder.co.uk>]

Art,

You are a mine of information.  I always wondered what to do with my old
type 1 Cibachrome filters!

Seriously I think the Tamron route is the best.

Thanks,

Ian
----- Original Message -----
From: "Arthur Entlich" <artistic@ampsc.com>
To: <filmscanners@halftone.co.uk>
Sent: Tuesday, November 13, 2001 3:47 PM
Subject: Re: filmscanners: Pre scan viewer?


> I suppose it depends on the resolution of the webcam and if you have
> software to make easy inversions.
>
> It would probably be a lot easier to just locate an old consumer grade
> video camera, or even some older camcorders had the feature.  It's
> funny, but I'm not sure the newer ones have it (the neg/pos switch) as
> "standard equipment" anymore.
>
> The camera/camcorder either needs to have a very close macro lens or
> have the ability to have close up adapters added. At the time when I
> bought the video camera many moons ago, I also bought an adapter which
> was designed for reviewing or videotaping negs and slides.  It is a
> close up adapter/len and a tube with a frosted glass at one end.  You
> place a light source there.  There are both nag and slide carriers,
and
> there is a slot fro them in the tube.  There is a second slot which
> holds the filters.  There was one for slides, which wasn't really
> necessary, and another for negative films, which wasn't very effective
> as films changed, and therefore the masks did as well, so I started to
> use filter packs I made up from Cibachrome enlarger filter packs.
SInce
> most older video cameras had manual white balance settings, one could
> also adjust that aspect (although it mainly moved the color balance
from
> red through blue)
>
> The other option is to see if you can find one of the nicer systems
> which was made by Tamron.  You might find these used rather cheaply as
> well.  It was a video transfer system for film, using a macro lens,
> backlighted platform, and an electronic color filtering system of some
> sort and used a CCD chip video sensor.  They actually weren't bad,
> although the resolution wasn't anything to write home about.  But the
> main advantage is that this is direct "real time" type of viewing, no
> scanning no processing.
>
> Anyway, that's what I know about this stuff, as it if your webcam will
> function, depends upon the type of output you can get from it.
>
> Art
>
> Ian Jackson wrote:
>
> > Art,
> >
> > So do you think it might be possible to rig up a low cost equivalent
> > using a web camera?
> >
> > Ian
> > ----- Original Message -----
> > From: "Arthur Entlich" <artistic@ampsc.com>
> > To: <filmscanners@halftone.co.uk>
> > Sent: Monday, November 12, 2001 12:32 PM
> > Subject: Re: filmscanners: Pre scan viewer?
> >
> >
> >
> >>There are some quite fast professional scanners, and also screen
> >>resolution doesn't require very high resolution scans, but if it is
> >>
> > very
> >
> >>fast, or immediate, most likely it is simply using a video camera.
> >>
> >>When showing negative film, the video camera does an inversion.
> >>
> >>The orange mask can be removed by a filter which is of the opposite
> >>color to the mask.  I sometimes use my older video camera for this.
> >>
> > It
> >
> >>has the inversion circuitry built in, and I just have to place a
cyan
> >>filter in front that come close to being the color complement to the
> >>orange mask.
> >>
> >>Art
> >>
> >>Ian Jackson wrote:
> >>
> >>  > When I visit my local processor he has an imaging camera which
> >>
> > displays
> >
> >>  > a colour or B& W negative as a positive image on a monitor.
This
> >>  > appears to be a much more convenient and quicker way of
previewing
> >>
> > negs
> >
> >>  > than using a scanner preview.
> >>  >
> >>  > How does this equipment manage to make a colour positive and at
> >>
> > the same
> >
> >>  > time remove the orange mask?
> >>  >
> >>  > Ian
> >>  >
> >>  > .
> >>  >
> >>  >
> >>
> >>
> >>
> >>
> >>
> >
> > .
> >
> >
>
>
>