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Platinum Panaflex and B&W stock


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#1 Tomasz Augustynek

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Posted 16 September 2005 - 02:55 PM

Does anyone have an experience with shooting black&white on Panaflex Platinum?
I was just using it and Kodak 5222 stock.
Unfortunately, we got brighter stripes on certain shots. They are especially visible on the sky or plain surfaces.
First, I thought there was something wrong with the processing, but these stripes look too regular and stable.
I was looking for a solution for a long time and I discovered that in back of the camera gate you have a part that tightens film to the gate. It's made of five steel stripes...
I thought they could've bounced the light coming through thin b&w neg and exposed on the film.
Does it make sense?
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#2 Stephen Williams

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Posted 16 September 2005 - 03:13 PM

Does anyone have an experience with shooting black&white on Panaflex Platinum?
I was just using it and Kodak 5222 stock.
Unfortunately, we got brighter stripes on certain shots. They are especially visible on the sky or plain surfaces.
First, I thought there was something wrong with the processing, but these stripes look too regular and stable.
I was looking for a solution for a long time and I discovered that in back of the camera gate you have a part that tightens film to the gate. It's made of five steel stripes...
I thought they could've bounced the light coming through thin b&w neg and exposed on the film.
Does it make sense?

<{POST_SNAPBACK}>



Hi,

I think you've found the problem. Color films have ramjet on the back that reduces light by about 5 stops.

Stephen
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#3 John Pytlak RIP

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Posted 16 September 2005 - 03:24 PM

Since B&W films do not have rem-jet, the anti-halation technology usually involves putting absorbing dyes into the film support or as an emulsion layer. Not quite as much protection as rem-jet, especially when you have a shiny chrome plated backing plate.

The halation protection of B&W negative films has improved over the years. I suspect part of the nitrate film "glow" or "aura" associated with some of the classic films of the 30's and 40's was due in part to halation.
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#4 Tomasz Augustynek

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Posted 18 September 2005 - 02:03 AM

Is there any way to avoid it?
I'm going to do some tests again tommorow and speak to Panavision.
It's hard to believe there's no solution for that problem, as they say. Platinum is at least 15 years old camera. Didn't anobody shoot a B&W movie with it?!
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#5 Saul Pincus

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Posted 18 September 2005 - 10:33 AM

Is there any way to avoid it?
I'm going to do some tests again tommorow and speak to Panavision.
It's hard to believe there's no solution for that problem, as they say. Platinum is at least 15 years old camera. Didn't anobody shoot a B&W movie with it?!

<{POST_SNAPBACK}>


One would think Robert Richardson, ASC would be an expert on this, given all the 35mm B&W scope vignettes he shot for several Oliver Stone films (JFK, etc.) in the early nineties. (Then again, he was probably looking for "the nitrate glow" on purpose...)

Saul

Edited by Saul Pincus, 18 September 2005 - 10:35 AM.

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#6 David Mullen ASC

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Posted 18 September 2005 - 11:07 AM

You should ask Panavision to paint the chrome black -- they've probably had to do that in the past for other b&w projects so probably already have a gate like that set aside.
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#7 TheEdzter

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Posted 28 September 2005 - 09:25 PM

Panavision has a special film "pressure pad" that is flat and completely black... they should install that for you when shooting b&w film...
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#8 Adam Frisch FSF

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Posted 29 September 2005 - 01:03 PM

...and Arri has special B/W black pressure plates for all their cameras, if you'd want to change...
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