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G0TEZ > CINE 29.04.06 05:42l 48 Lines 1838 Bytes #999 (0) @ WW
BID : 39731-GB7FCR
Read: GUEST
Subj: Re: REPLY: Two Colour Film and TV.
Path: DB0FHN<DB0RGB<DB0MRW<DB0ERF<DB0FBB<DB0IUZ<DB0GOS<DB0RES<ON0AR<GB7FCR
Sent: 060429/0352Z @:GB7FCR.#16.GBR.EU #:39731 [Blackpool] FBB-7.03a $:39731-GB
From: G0TEZ@GB7FCR.#16.GBR.EU
To : CINE@WW
Hello Tom,KC2PFV.
I have seen some more about Claude Friese greene's two colour cine system.
It seems it was one of his own, from 1919.
This time it showed the camera in more detail. He used a disc with about
40% red plastic(?) and 10% yellow/green. The film was double width, it
looked about 70mm and the disk rotated taking alternate coloured frames.
The problems with the film shown on TV seem mainly due to the great age of
the film and the dyes going off.
What interested me was the comparison with John Logie Baird's CTV system.
He use additive colour mixing of course but he use 80% cyan and 20%
orange.
Pictures were taken with his Telechrome camera which had two guns and a
'target' about 4" square coloured orange on one side, cyan on the other.
The target was mica so the image frome the lens appeared on both sides.
Reception was often in cinemas, where he used two projectors at an angle
of 90 deg with a graticule screen. This gave not only large screen colour
TV but 3D without glasses as well..
Still pictures in colour go back to 1861. Clerk Maxwell, the physicist
came up with an idea for colour pics and, later, the Lumiere bros, The
most popular was the three colour process by a Russian.The Lumiere's
'Autochrome process, patented 1904 (1906 in US) was in use til 1940.
A russian inventor came up with a three colour still process in 1863, I
will send it as a small 7Plus .JPG, it is part of a collection, all pre
1900, in the Library of Congress, so in the public domain. It is small but
seems excellent.
I havent been to the Library of Congeress site but it sounds worth a
visit.
There are a lot of other sites about early photography, both still and
movie.
All the best. Ian.
All the best from - Ian, G0TEZ @ GB7FCR
Message timed: 02:12 GMT on 2006-Apr-29
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