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Found 2 results

  1. I decided to check out the history of film stocks and their different formats, and I realized that there are no actual full-frame movie stocks that were ever developed or used for cinema back in those days. Full-frame as we cinema people interpret it today, from what I understand, came from digital manufacturers making sensors based on the 135mm film stock dimensions made for Photography: -Which are ~35mm wide in its negative and ~24mm tall negative(which is approximately the actual width of negatives on Super35mm film stocks, so basically it's like someone rotated Super35mm stocks 90 degrees) -Pulled along horizontally rather than vertically, which is actually what allows the ~35mm width negative Unless I'm missing something, why was there no Full-Frame( not the full-gate 35mm but the actual negative 36 x 24) ever used? It was quite surprising to see that cinema film stock developers decided to just jump straight into Medium Format from Super35. The only thing that might come close to it is VistaVision, but I'm not 100% sure if that actually qualifies as full frame . Thanks
  2. Hello everyone, I've got some questions about materials and push-processing in the 30s. I'm working on a the British documentary "Coal Face" (1935) by GPO film unit. There is quite a bit of information on GPO in general but almost nothing on that particular film. I studied photography, so I could tell just looking at the film that some parts of it were heavily pushed. Since it's a scientific paper I can't just "know" it's the case, I have to bring arguments in favour of it. And while I know that the extreme graininess and high contrast are good indicators for push-processing, it would be even better if I could find further proof, and that's where my questions start. I'll include two screenshots from the film, that demonstrate the huge difference in quality. The first screenshot is from a scene above ground inside a building whereas the second was made in a coal mine. According to one of my sources [Enticknap, Leo. "Technology and the GPO Film Unit" The Projection of Britain: A History of the GPO Film Unit. Eds. Scott Anthony and James G. Mansell. London: Palgrave Macmillan on behalf of British Film Institute, 2011. 188-198.], the camera used by GPO was a Autokine with a 50mm/2in lens with a minimum aperture of f1.9, most likely one of these: https://www.scienceandsociety.co.uk/results.asp?image=10405810 Does anyone know where I could find out which stock they used? At the time most likely panchromatic, but that's about as far as I got. The other thing is, I found lots of information for photography and push-processing but next to nothing on film and push-processing, though I'm assuming it must have been quite common, especially in the documentary movement. If anyone knows of any (quotable) source for this kind of information, it would be a great help. I found some websites but a published book or an article in a journal is always preferable. Thanks a lot!
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