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Author Topic: Image resolution of 35mm cinema film Steve Kraus Film God Posts: 4094 From: Chicago, IL, USA Registered: May 2000 posted 03-20-2004 06:53 PM                    It's beginning to happen though.  |  IP: Logged Larry Myers Master Film Handler Posts: 371 From: Herndon, VA, USA Registered: Jan 2001 posted 03-21-2004 06:49 PM                 Hi I will take a stab at it. A 35 film frame opening of 24mm by 18mm might have a "pixel" or "line space" if you will range of 700x500 to about 2480x2160 depending on film type and printing methods. Larry  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 03-21-2004 08:27 PM                        The on-line Kodak motion picture film data contains full MTF and granularity curves for each film. Here is the data for Kodak VISION2 100T Color Negative Film 5212, the sharpest Kodak color negative film on the market today: Kodak VISION2 100T 5212 data Remember, MTF data for film is given as a function of cycles per millimeter on the film. Usable visual information is usually obtainable even when the response is well below 20%, thus averaging higher than 100 cycles per mm for this film. Note that on a color negative film, the top imaging layer (blue) is the sharpest, the middle (green sensitive)layer close to it, and the bottom (red sensitive) layer the least sharp. This is because light scatters somewhat as it goes through the emulsion layers of the film. Kodak's T-Grain and 2-electron sensitization technologies have helped improve sharpness and reduce graininess tremendously in recent years: Kodak R&D  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 03-21-2004 09:08 PM                     Larry is fixated on resolution of the film itself which in the long run is a meaningless number The number that actually counts is what is measured on the screen in a theatre and that is the comulation of the negative the print stock the printer the processing the projector lens the ambient room light the lamphouse output Numbers get rather meaningless at this point The bottom line is that Kodak as other film manufacturers have consistently raised the bar of the raw source of the data regrettably many cinematographers have chosen to degrade that to suite the artisitic statement of the final film that is all well and good as it is the end product that counts but in raw numberts it doesn't current 35mm due to its contrast ratio and resolution is still a better medium than electronic means and 65mm/70mm is still better  |  IP: Logged Larry Myers Master Film Handler Posts: 371 From: Herndon, VA, USA Registered: Jan 2001 posted 03-22-2004 04:32 PM                 Hi Yes it is a mix and match problem when you talk total system resolution. I think with Kodak's best films along with using a good $100,000 camera, 100lp/mm or more us possible. Although, as you say, all this is wasted if the projector shutter is not in sync and your using a old lens. I do believe high quality showprints from Kodak's latest high resolution film stocks projected with the latest ISCO HD scope lenses, should equal or better screen image resolution of the 65/70mm presentations done in the 50's and early 60's. Larry  |  IP: Logged

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