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Why 4K? ghj / 2009.03k-cw21 Why 4K? George Joblove Sony Pictures Technologies
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Why 4K? ghj / 2009.03k-cw22 Motion-Picture Distribution Studios, Distributors Motion- Picture Masters (Intermediates) Theaters Release prints
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Why 4K? ghj / 2009.03k-cw23 Motion-Picture Distribution Studios, Distributors Motion- Picture Masters (Intermediates) Theaters Release prints PHOTO: KODAK 20th-century standard: 35-mm film
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Why 4K? ghj / 2009.03k-cw24 Motion-Picture Distribution Studios, Distributors Motion- Picture Masters (Intermediates) Theaters Release prints 20th-century standard: 35-mm film 21st-century standard: DCP (Digital Cinema Package)
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Why 4K? ghj / 2009.03k-cw25 Motion-Picture Distribution A DCP may be either of two resolutions: 2048 pixels wide 1080 pixels high 4096 pixels wide 2160 pixels high “2K”“4K”
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Why 4K? ghj / 2009.03k-cw26 Why 4K? Human visual acuity Modern cinema theater layout Maximizing quality of our work on the screen Maximizing quality of what goes into the vault for future use
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Why 4K? ghj / 2009.03k-cw27 360° Human Visual Acuity
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Why 4K? ghj / 2009.03k-cw28 360° Human Visual Acuity 1°
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Why 4K? ghj / 2009.03k-cw29 360° 1′1° Magnification Human Visual Acuity
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Why 4K? ghj / 2009.03k-cw210 Human Visual Acuity ‘Normal’ (‘20/20’ [US/UK], ‘6/6’ [EU], ‘1.5/1.5’ [JP] ) human vision resolves 30 cycles (line-pairs) per degree, or one line per arcminute This corresponds to about: ■ 486 lines (NTSC) 576 lines (PAL) at 7 picture-heights at 6 picture-heights ■ 1080 lines (HDTV or 2K DCI 1.85:1) at 3 picture-heights ■ 2160 lines (4K DCI 1.85:1) at 1½ picture-heights
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Why 4K? ghj / 2009.03k-cw211 Modern Cinema Design, Stadium Seating
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Why 4K? ghj / 2009.03k-cw212 Modern Cinema Design, Stadium Seating PHOTO: BAM ROSE CINEMAS
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Why 4K? ghj / 2009.03k-cw213 Today’s Demonstration Images ■ Shot on still cameras –Sony 900 [6K 4K Bayer] and digital Hasselblad [7K 5K Bayer] ■ Gamma-converted to linear floating-point ■ Cropped to 1.85:1 and down-res’ed to DCI 4K (3996 2160) ■ Color-space- and gamma-converted from sRGB to DCI X'Y'Z' ■ Converted to 16-bit-integer per channel, saved in TIFF format ■ Created left/right mirrored image by pixel swapping ■ Created DCI package (4K) from each still image and mirror
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Why 4K? ghj / 2009.03k-cw214 Today’s Demonstration Projection Screen: 20 ft (6 m) wide, matte 1.0, non-perforated Left-side projection: 2KRight-side projection: 4K4K DCP Doremi DCP2000Sony LMT-300 Christie CP2000-M DLPSony SRX-R320 SXRD 2048 10804096 2160 14 ftL = ~48 cd/m² ROOM: CW Theater 2
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