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flashes of blue on film?


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#1 Daniel Carruthers

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Posted 08 December 2009 - 04:06 PM

Hi I recently saw some Ultra16mm footage I shot last summer
it was a test for a wedding video company looking to offer 16mm film to their clients

I shot about 50 feet of fuji 250t it was a 4 month old recan from a short film I shot earlier in the year
Anyways the film didnt get processed right away it sat in a fridge for about 3 months then the wedding video company got around to getting it developed and transferred a few weeks ago
it was transferred at pro res 422hq 1080
Anyways when I was watching it, every couple of seconds the image would flash blue
then disappear
Does anyone know what this could be?
At first I thought maybe I accidently flashed the negative when loading, but I know I was real careful, and I always thought when that happend you get red flashes not blue?

any ideas? could it be that the film sat un-processed for 3 months or maybe something happened at the lab or transfer house?
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#2 Richard Tuohy

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Posted 08 December 2009 - 05:20 PM

Hi I recently saw some Ultra16mm footage I shot last summer
it was a test for a wedding video company looking to offer 16mm film to their clients

I shot about 50 feet of fuji 250t it was a 4 month old recan from a short film I shot earlier in the year
Anyways the film didnt get processed right away it sat in a fridge for about 3 months then the wedding video company got around to getting it developed and transferred a few weeks ago
it was transferred at pro res 422hq 1080
Anyways when I was watching it, every couple of seconds the image would flash blue
then disappear
Does anyone know what this could be?
At first I thought maybe I accidently flashed the negative when loading, but I know I was real careful, and I always thought when that happend you get red flashes not blue?

any ideas? could it be that the film sat un-processed for 3 months or maybe something happened at the lab or transfer house?

Hi Daniel,
it is very possible that condensation got in while the film was in the fridge after shooting. If a film gets wet in this way, when the film is un-wound prior to processing static flashes can be generated as the wet film peels off from the wind. I think these are typically blue. A fridge is a very humid environment. When you buy film from kodak, you can be sure that the film container is air tight and that the tin was packed in a humidity controlled environment. In that state, it is safe to put in the fridge. After shooting, however, this is no longer the case. I wouldn't store exposed film in a fridge for this reason.
regards,
richard
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#3 John Sprung

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Posted 08 December 2009 - 07:34 PM

Can you post some frames? Static electricity flashes can look different than moisture damage.




-- J.S.
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#4 Bernie O'Doherty

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Posted 08 December 2009 - 07:52 PM

Could be a light leak. Make sure your eye is against the eyepiece rubber. Tape the mags. You might want to do a light-leak test by shining a light all the way around the running camera with film. Time it so that each quadrant of the lighted circle is 5 secs duration. This way you could figure out the leak source.
Another way would be to put a 9volt battery with bulb attached inside the magazine and go into a darkened room. Slowly manipulate the magazine in all directions while looking for any light exit points. Light coming out means light's going in.
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#5 Daniel Carruthers

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Posted 09 December 2009 - 03:51 PM

Thanks for the info
I'll see if I can get some footage to post online
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#6 Adam Garner

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Posted 09 December 2009 - 07:47 PM

I had a weird cyclical flash on some 500T recently. It wasn't blue, but it looked like the film was overexposed back and forth. It was weird, and I asked some folks about it that thought it could have been a roller. No one had seen it.

I keep 100' rolls in the fridge and I got to thinking, they're not sealed like Super 8 carts are. They're only wrapped with that paper ribbon inside a plastic box.

Is it possible that 16mm film in the fridge can get humidified?

Also, the day I shot that footage it was ridiculously humid, summer in Dallas/90 degrees and raining. So bad that my lens would fog up any time I would pull the camera out.

I wonder....
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Metropolis Post

Paralinx LLC

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Aerial Filmworks

Willys Widgets

Ritter Battery

Wooden Camera

Glidecam

Broadcast Solutions Inc

Rig Wheels Passport

rebotnix Technologies

Visual Products