In the fifties the RAF experimented with a truly cumbersome piece of
equipment. Using a massive Wray lens in a Canberra aircraft they shot on 5
inch wide film, processed in the air, scanned the film with a CRT scanner and
transmitted the images back to base. The film went in a continuos roll from
camera to processor to scanner. The USAF joined in the technique. I think a
base in Malta was used and photography done over Italy while the receiving
base was back in the UK, probably Brize Norton. The reason they scanned film
was because of the need for very high resolution and to bring back concrete
evidence. I think the CRT only scanned small selected parts of the film.
Resolution was good enough to see car number plates at 30,000 feet.
Bob Croxford
Is this information available? I'd be interested your source.
thanks
Francis Ware
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