[Tig] mistake in wikipedia?
jeffkreines at mindspring.com
Sat Jul 14 19:54:27 BST 2007
On Jul 14, 2007, at 11:16 AM, Graham Collett wrote:
> Mr Google says that RCA had a tk20 in the 40's that was
> an Iconoscope model and only b/w .. I bet that's a fancy word for a
> tube camera.
Iconoscopes were pickup tubes used before Image Orthicons, very
elegant tube with a large (nearly 4x5") photosite -- scanned from an
angle. Iconoscopes needed a lot of light, but the large area meant a
film chain could be built that simply aimed a projector at the tube
-- quite pure.
I may have a photo of one I could send -- RCA TP6 and the Iconoscope
There were also flying spot devices in the US used mostly for graphic
cards. I have a manual somewhere that I got on eBay (why???) for one
And let us not forget Kodak's Super 8 device from about 1972 -- the
Videoplayer. Took S8 film and spit out low-res composite video.
Flying spot, and pretty cheap. We had one at MIT... but it wasn't
as good as using a S8 telecine projector on a film chain.
Sarkes Tarzian also made some bizarre color film chain cameras that
were upgradable from monochrome to color by just adding tubes and a
prism -- there's a brochure somewhere on the internet.
Perhaps the TIG should do a serious history of telecine wiki?
Jeff "loves this old stuff and has some early books about it" Kreines
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