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x-raying low-speed motion picture films...


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#1 Marc Roessler

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Posted 06 September 2007 - 05:29 PM

Currently on CML there's a discussion about x-ray damage to motion picture film.
What I'd like to know: it is said that the hand-baggage x-ray machines are safe for lower
speeds photographic film (say, like for a 100 ASA film).
However, I hear all the time that motion picture film should not be x-rayed, regardless of
film speed. Why is this? Because uneven shifts in the black areas are more noticable with
moving images?

Greetings,
Marc
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#2 Charles MacDonald

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Posted 06 September 2007 - 09:41 PM

However, I hear all the time that motion picture film should not be x-rayed, regardless of
film speed. Why is this? Because uneven shifts in the black areas are more noticable with
moving images?

their is quite abit about it on the Kodak Site, just imagine what the film would look like if only half the roll got a slight zap, the brightness would come and go every 1/2 second. and someone watching would perhaps have an epileptic fit!
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#3 Jonathan Bowerbank

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Posted 07 September 2007 - 12:49 AM

X-rays can expose and fog up the image on undeveloped stock. Earlier this year, I shot part of my brother's wedding on 16mm and forgot to take it out of my bag on the way back home. The images were noticeably softer and lower contrast than expected and the blacks were a little milkier. It was almost as if someone had flashed my negative, and this was on Kodak 7217 200T stock.
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#4 Marc Roessler

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Posted 07 September 2007 - 01:18 PM

Jonathan, was the film in a bag you carried on the plane, or was it in the other luggage?
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