Why 4K? ghj / g1 Why 4K? George Joblove Chris Cookson Sony Pictures Technologies MAY ADD A SLIDE OR TWO AT THE START
Why 4K? ghj / g2 Motion-Picture Distribution Studios, Distributors Master (Intermediate) Theaters Release prints
Why 4K? ghj / g3 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
Why 4K? ghj / g4 Human Visual Acuity 360°
Why 4K? ghj / g5 Human Visual Acuity 360° 1°
Why 4K? ghj / g6 360° 1° 1′1° Human Visual Acuity Magnification
Why 4K? ghj / g7 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
Why 4K? ghj / g8 Modern Cinema Design, Stadium Seating
Why 4K? ghj / g9 Modern Cinema Design, Stadium Seating PHOTO: BAM ROSE CINEMAS
Why 4K? ghj / g10 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
Why 4K? ghj / g11 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-ZX DLPSony SRX-R320 SXRD 2048 2160 ~14.6 ftL = ~50 cd/m²