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> Well, on a lark I set-up my camera on a tripod with a
negative and set-up
> my computer behind it. Back in the early 1960's I worked in Kenya as an electronic instrument
technician.
The Kenya Survey Dept had an electronic contact printer for their survey
film, I can't remember the size but at least 12 inches square.It consisted of a
Cathode Ray tube that displayed a Lissajous figure where the electron beam was
controlled by the light that had passed through the negative and the
photo paper and was picked up by a photomultiplier tube.
I think it was called a LogEtronic Printer.
It was quite a fiendish piece of electronics but when eventually I managed
to get it working the results were incredible. Knowing a bit more about
photography now the LogE was referring to the Log E of the film or
paper which could be changed at will. The difference between a
straight print and one dodged with this machine was astounding with dodging that
could never be done by hand. It would have required complex masking to
achieve the same results.
There must be lots of these things laying around in Surplus stores, I'm
pretty sure the Armed Services would have used them.
I've often wondered if anyone had used the same technique for an Enlarger
light source.
Norman Dennett
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