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[filmscanners] Re: Filmscanners - is this about as good as itgets?



more thanks, now I just have to wait for summer :)
robert
----- Original Message -----
From: owenpevans <owenpevans@rogers.com>
To: <robert55@xs4all.nl>
Sent: Wednesday, January 29, 2003 9:15 PM
Subject: [filmscanners] Re: Filmscanners - is this about as good as itgets?


> Hi Robert and Paul,
>     I specialize in floral photography and the pink cast which occurs is
> called anomalous reflection or the ageratum effect. ( you really see the
> effect when photographing the floss flower [ageratum houstonianum] under
> direct sunlight) Instead of blue, film will record the colour as pink or
> purple. Nevermind the names; the reason that this occurs is because film
> sees colours differently than our eyes do and the film is more sensitive
to
> the infrared end of the spectrum.
>     To correct for this, you need to mount a mid-blue filter. A deep-blue
> produces too much cast over the whole image and a light-blue filter isn't
> enough for any improvement. If no filters are available, make some shade
> over the flower and the effect goes away since it really requires direct
> light to manifest itself.
>     If a digital CCD or sensor mimics film, the effect can happen but this
> is usually an effect of film.
> Hope this is useful.
> Owen
>
> Owen P. Evans
> J.33.3
>
>
>
> ----- Original Message -----
> From: "Robert55" <robert55@xs4all.nl>
> To: <owenpevans@rogers.com>
> Sent: Wednesday, January 29, 2003 2:22 PM
> Subject: [filmscanners] Re: Filmscanners - is this about as good as
itgets?
>
>
> Thanks, your explanation seems more logical than mine
> ----- Original Message -----
> From: Paul D. DeRocco <pderocco@ix.netcom.com>
> To: <robert55@xs4all.nl>
> Sent: Wednesday, January 29, 2003 6:52 PM
> Subject: [filmscanners] RE: Filmscanners - is this about as good as
itgets?
>
>
> > > From: Robert55
> > >
> > > From time to time I find a picture of some very boring pink
> > > flowers, which I
> > > suppose I photographed because they were interesting blue flowers.
> Someone
> > > who has more knowledge of flowers than I have (I don't know whether we
> are
> > > talking about the same flowers) said this was because these flowers
> absorb
> > > (don't reflect) UV light. If I understand this correctly this is
> somewhat
> > > like using an UV-filter to eliminate blue haze in high mountains. It
> would
> > > be interesting to know what effect (if any) a UV-filter has on a
digital
> > > camera
> >
> > I've heard that what upsets the photography of some flowers is that they
> > reflect a lot of infrared, which is picked up as red by some films or
> > sensors. (Bees apparently see this range of color.) That's why the
Minolta
> > DiMage 7i camera added an IR filter--I guess some DiMage 7 owners
> > complained.
> >
> > --
> >
> > Ciao,               Paul D. DeRocco
> > Paul                mailto:pderocco@ix.netcom.com
> >
>
>
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