Archived posting to the Leica Users Group, 2001/06/01

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Subject: Re: [Leica] Bokeh - OT Long- and now for something entirely different!
From: "Dan Post" <dpost@triad.rr.com>
Date: Fri, 1 Jun 2001 23:30:30 -0400
References: <MABBKDHLGBCAHCPCNIBMOEOECHAA.PGW@ecr.net> <3B184DEF.F1615D20@rabiner.cncoffice.com> <000b01c0eb12$9d2bb580$cfbc3842@triad.rr.com>

For more info- check this site!

http://www.newcastle.edu.au/department/fad/fi/woodrow/an-orig2.htm

interesting!
- ----- Original Message -----
From: "Dan Post" <dpost@triad.rr.com>
To: <leica-users@mejac.palo-alto.ca.us>
Sent: Friday, June 01, 2001 11:17 PM
Subject: Re: [Leica] Bokeh - OT Long- and now for something entirely
different!


> MArk-
> The 'camera oscura' is literally a 'dark room' where an image is projected
> onto a wall opposite a lens or pinhole- the box could be small or large-
> from an actual room, to a cardboard box! The 'camera lucida' is/was an
> optical instrument that consisted of a lens and sometimes a mirror, that
> projected a bright image onto a drawing surface much like an opaque
> projector- similar set ups in theory, actually- but slightly different in
> operation.
> If you take a simple lens, hold is so an image is formed behind it, and
then
> reflect the image down to a piece of paper, you have, basically, a camera
> lucida!
> I think the term was used also for a device that microscopists used to
> simultaneously look through a microscope ocular, and with the other eye
open
> and focused on a piece of paper, the two images seemed to coincide- the
> microscope image, and the one the viewer was drawing- it was used to
render
> views through the 'scope before it was fashionable to use a camera!!!
> Dan ( Old and treacherous trumps young and skillful!) Post
> ----- Original Message -----
> From: "Mark Rabiner" <mark@rabiner.cncoffice.com>
> To: <leica-users@mejac.palo-alto.ca.us>
> Sent: Friday, June 01, 2001 10:22 PM
> Subject: Re: [Leica] Bokeh - OT Long
>
>
> > Dan Hausman wrote:
> > >
> > > I wrote a Art History paper in 1979 on the fact that  Vermeer used a
> camera
> > > Lucida to help his rendering, he even rendered the optical artifacts
in
> his
> > > work. My art history prof said I was full of beans. HA!
> > >
> > >  Dan pgw@ecr.net
> > >
> > I didn't think it was news that Vermeer used a camera obscura to help
him
> with
> > his work as did other painters. But what the heck is a Lucida?
> >
> >
> > Mark Rabiner
> >
> > Portland, Oregon
> > USA
> >
> > http://www.rabiner.cncoffice.com/
> >
>
>

In reply to: Message from "Dan Hausman" <PGW@ecr.net> (RE: [Leica] Bokeh - OT Long)
Message from Mark Rabiner <mark@rabiner.cncoffice.com> (Re: [Leica] Bokeh - OT Long)
Message from "Dan Post" <dpost@triad.rr.com> (Re: [Leica] Bokeh - OT Long- and now for something entirely different!)