Re: Anyone given Color Daguerreotypes a try?

"And the other is a little know process
which creates colors by Micro-Dispersion. Sometimes
spoken of as the Spectral-Dispersion process."

Are you referring here to Lippmann's suggestion (1906) to use
some diffraction encoding device in order to make full color
photographs?

Martin

----- Original Message -----
From: "Phillip Murphy" <pmurf@bellsouth.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Sunday, June 20, 2004 7:27 AM
Subject: Re: Anyone given Color Daguerreotypes a try?

> The technique you describe is an adaptation of the method
> used by Fox Talbot in his patent applied for in 1841.
> The phenomenon was also discovered independently by
> Kratochwila in Vienna and later by Francis R. Wells
> who applied for a patent using heat as the developer.
> As it turned out, the image was much weaker than the
> silver image of the Daguerreotype and was abandoned.
> There were attempts at using the image as a basis for
> making etchings.
>
> Colors appear on the plate, however, they have no
> relationship to the spectra which created the image.
>
> The Hillotype was the first photographic means by
> which a record of nature's colors appeared in the image
> with any degree of accuracy and could remain in the
> daylight without fading. This was in the early part of
> the 1850's. Levi Hill's process is not a Daguerreotype,
> yet, the technique does use the Daguerreotype plate as it's
> foundation.
>
> Fifty years later, two processes could reproduce
> natural colors in the lab with good results. One is
> the Nobel Prize winning process of Gabriel
> Lippmann. And the other is a little know process
> which creates colors by Micro-Dispersion. Sometimes
> spoken of as the Spectral-Dispersion process.
>
> -phillip
>
>
>
>
>
>
> Jeff Sumner wrote:
>
> > >From the back of an old Daguerreotype manual:
> >
> > [quote]
> > COLORED DAGUERREOTYPES ON COPPER.--To effect this, take a polished plate
of
> > copper and expose it to the vapor of iodine, or bromine, or the two
> > substances combined; or either of them in combination with chlorine.
This
> > gives a sensitive coating to the surface of the plate, which may then be
> > submitted to the action of light in the camera. After remaining a
sufficient
> > time in the camera, the plate is taken out and exposed to the vapor of
> > sulphuretted hydrogen. This vapor produces various colors on the plate,
> > according to the intensity with which the light has acted on the
different
> > parts; consequently a colored photographic picture is obtained. No
further
> > process is necessary as exposure to light does not effect the picture.
> > By this process we have an advantage over the silvered plate, both in
> > economy, and in the production of the picture in colors.
> > [/quote]
> >
> > Anyone give it a go? What colors, exactly? Doesn't sound like the color
> > process that someone else was trying to perfect at the time, and it most
> > CERTAINLY isn't the Polaroid answer to the color problem.
> >
> > It _is_ interesting, though.
> > JD
>
Received on Sun Jun 20 12:04:47 2004