[Leica] New acquisition

[mark at rabinergroup.com (Mark Rabiner)]

Enlarger Light Sources:
I preferred an Aristo VC variable contrast cold light for my main darkroom
work for my color at my rent a lab they had Omega heads.

I have a video of Weston making prints with a light bulb hanging from the
ceiling with a cord and a chain hanging off of it with the assistance of
Charis.
I often wondered what kind of lightbulb it was. Or if Weston knew.
For sure it was tungsten.
Oops I guess it was not an enlarger.

-- 
Mark William Rabiner
mark at rabinergroup.com


> From: Douglas Barry <imra at iol.ie>
> Reply-To: Leica Users Group <lug at leica-users.org>
> Date: Sun, 1 Aug 2010 21:46:49 +0100
> To: Leica Users Group <lug at leica-users.org>
> Subject: Re: [Leica] New acquisition
> 
> Enlarger Light Sources
> Enlargers cost money and not all photographers felt they were a business
> necessity. Exposures were lengthy before the days of fast bromide paper, 
> and
> light sources were a problem. Inventors tried every kind of artificial
> light: candles, lamps burning kerosene, whale oil, coal gas, and acetylene;
> battery powered carbon arc lights; hydrogen-oxygen limelight. The latter
> consisted of a cylinder of lime (calcium carbonate), heated in a gas or
> hydrogen-oxygen flame. It produced a brilliant white light much superior to
> the yellow light of kerosene. It was first used for general illumination in
> 1826, and in 1841 to illuminate subjects for calotypes. Some photographers
> used acetylene thirty years after Edison invented the electric lamp in 
> 1879,
> either because their places of business were not electrified, or simply
> because they thought the results were better. Also, early incandescent 
> light
> bulb filaments were too large to be placed at the focus of a parabolic
> reflector to produce a parallel beam.>