Теперь пользователи сайта могут скачать книгу Пола Уиллера "Цифровой кинематограф высокого разрешения" издания 2007 года в формате PDF. Разделы книги: высокое разрешение (краткий обзор HD), решения для производства кинопродукции (форматы, качество изображения, качество воспроизведения, требования к сьемке), технолгия (цифровое представление видео, сканирование изображения, стандарты разрешения, трехматричная технология, одноматричная технология, видеомагнитофоны HD), HD кинематограф (освещение, баланс, объективы, многокамерная сьемка), примеры сьемки, пост продакшен, видеокамеры, меню видеокамер. Книга будет в первую очередь полезна специалистам в области кинематографа и телевидения (видеоинженерам, операторам), а также широкому кругу читателей, которых интересует цифровой кинематограф (в частности студентам радиотехнического профиля, которые имеют возможность в перспективе найти возможность в этой сфере). Материал пока доступен только в оригинале - на английском. Contents Preface xv About the Author xvii Introduction xix Acknowledgments xxi PART 1 High Definition: A Quick Overview 1 1 Why shoot on HD? 3 1.1 What do we mean by High Definition (HD)? 3 1.1.1 The knowledge base 3 1.1.2 What does it mean to the Producer - saving money! 4 1.1.3 What does it mean to the Director? 4 1.1.4 What does this mean for the Director of Photography? 4 1.1.5 What does it mean to the other crafts? 4 1.1.6 Editing and post-production 4 PART 2 Production Decisions 7 2 Which formats to shoot on? 9 2.1 Progressive or interlace? 9 2.2 How many pixels do you need? 9 2.3 Recording formats 9 2.4 HDV - can you get away with it? 10 3 Picture quality 11 3.1 What does HD look like? 11 3.2 HD images compared with 35 mm 11 3.3 Anamorphic 35 mm 12 3.4 Comparisons with Super 16mm 12 3.5 Comparison with Digi Beta 13 4 Display quality 14 4.1 High definition shown on television 14 4.2 HD written to film and projected mechanically 14 4.3 HD shown on a state-of-the-art digital projector 14 4.4 Digital projectors 15 4.4.1 The Barco D-Cine Premiere DP 50® 15 4.4.2 The Barco SLM R8 16 5 Delivery requirements 17 5.1 For delivery on film 17 5.2 Multi-format delivery requirements 17 5.3 HD projection 18 5.4 Encryption 18 5.5 Broadcast delivery 18 5.6 Convertibility 18 5.6.1 Picture 18 5.6.2 Sound 18 5.6.3 Time code 19 6 Sales potential 20 6.1 Multiple standard sales 20 6.2 Multiple venue sales 20 6.3 Additional sales to HD users 20 6.4 Future proofing 21 7 Cost implications 22 7.1 Savings 22 7.1.1 Origination costs 22 7.1.1.1 Stock savings 22 7.1.1.2 Insurance savings 22 7.1.2 Savings in print costs 23 7.1.3 Shooting for anamorphic release 24 7.2 Added costs 24 7.2.1 Camera kit rental 24 7.2.2 Editing costs 24 7.2.3 Writing out to film 25 7.3 A cost comparison example - Oklahoma! 25 7.3.1 Stock and processing savings 25 7.3.2 Camera rental 25 7.3.3 Additional costs 26 7.3.3.1 Overall savings 26 7.3.4 Competitive pricing 26 8 Crewing 27 8.1 Should the DP operate? 27 8.2 Do you need a focus puller? 27 8.3 Do you need a loader? 28 8.4 Naming the camera assistants 28 8.5 Do you need a clapperboard? 28 8.6 Do you need a dolly grip? 28 8.7 Sound 29 8.8 Electricians 29 9 Different shooting requirements 30 9.1 General considerations 30 9.2 Shooting in the USA 30 9.2.1 Theatrical productions 30 9.2.2 US prime time television productions 30 9.2.3 US commercials 31 9.2.4 Other US productions 31 9.2.5 What frame rate to choose 31 9.2.6 Potential cost savings 31 9.3 European productions 33 9.3.1 European feature films 33 9.3.2 European television 33 9.4 Performance shows 34 9.4.1 The Merchant of Venice 34 PART 3 The Technology 35 10 Digital imaging 37 10.1 The history of digits 37 10.2 Digital tonal range 37 10.3 Linear and logarithmic sampling 38 10.4 Image resolution, why so many pixels? 40 10.5 Required resolution for HD 41 10.6 Data quantity 43 11 Scanning the image 44 11.1 A little of the history of television 44 11.2 Interlace scanning 45 11.3 Progressive scanning 46 11.4 Traditional cinema flicker 47 11.5 How are images captured by the two scanning formats? 48 11.6 Printing out to film 53 12 Line standards and definition 55 12.1 Line summation 55 12.2 Apparent picture quality 56 12.3 1080 versus 720 in television 57 12.4 Conclusions 59 12.5 Is HD worth the trouble? 60 13 Three chip technology 63 13.1 Additive color imagery 63 13.2 The three chip camera's beam splitter 64 13.3 The image sensors 65 13.4 The sensor chip 68 14 Single chip technology 70 14.1 What's available? 70 14.2 CCD sensors 70 14.3 CMOS sensors 70 14.4 CCDs versus CMOS chips 71 14.5 Color filtering in single chip cameras 71 14.6 Bayer pattern filtering 72 14.7 Sequential filtering 73 14.8 The effect of increasing the pixel count 74 15 The video tape recorder - the VTR 75 15.1 The HDCAM format 75 15.2 Helical scan recording 75 15.3 Mechanical considerations 76 15.4 The drum lacing mechanism 78 15.5 Operational considerations 78 15.6 A jammed mechanism 78 PART 4 HD Cinematography 79 16 Lighting and exposing for HD 81 16.1 An HD camera's equivalent ASA speed, or ISO rating 81 16.2 Tonal range 81 16.3 Lighting ratios 82 16.4 Lighting to a monitor 83 16.5 Highlights and shadows 83 16.6 Exposure 83 16.6.1 Using a monitor 83 16.6.2 Using a meter 84 16.6.3 Auto exposure 84 16.6.4 Exposing using a waveform monitor 84 17 Setting the color balance 86 17.1 White balance 86 17.2 What is white balance? 86 17.3 Neutral density filters 87 17.4 A warning! 87 17.5 Setting the white balance using a white card 87 17.6 Setting the white balance using a colored card 88 17.7 Setting the white balance under fluorescent lighting 88 17.8 The outer filter wheel on a Sony HDW camera 88 17.9 Black balance 89 18 Lenses 90 18.1 How to choose a lens 90 18.1.1 Resolution 90 18.1.2 Contrast 90 18.1.3 Perceived sharpness with regard to contrast 91 18.1.4 Color rendition 93 18.1.4.1 Overall color bias 93 18.1.4.2 Color fringing 94 18.1.4.3 What is fringing? 94 18.1.5 Breathing 94 18.2 Setting the back focus 94 18.2.1 Setting the back focus: zoom lenses 94 18.2.2 Setting the back focus: prime lenses 95 18.3 Focusing the lens using back focus charts-Beware! 95 18.4 Back focusing using the oval rings chart 97 18.5 Comparative focal lengths 97 18.6 Depth of field 98 18.7 Calculating depth of field 99 18.8 Neutral density filters 100 18.9 Limiting apertures 100 18.10 Filtration 101 18.10.1 Color correction 101 18.10.2 Diffusion 101 19 Monitors and cabling 102 19.1 What kind of monitors are available ? 102 19.1.1 Cathode ray tube monitors 102 19.1.2 Liquid crystal display monitors 102 19.1.3 Plasma screens 102 19.2 Lining up your monitor 103 19.2.1 An SMPTE line up 103 19.2.2 Lining up using EBU bars 104 19.2.3 Using an exposure meter 104 19.3 Cabling your monitor 105 19.3.1 Single coaxial cables 105 19.3.2 Triple coaxial cables 105 19.3.3 Termination 105 19.3.4 Serial monitors 105 19.4 Best practice 106 20 Playback 107 20.1 Don't use the camera for playback! 107 20.2 Using the Sony HDW F500 VTR for playback 108 20.3 Using digital video for playback 108 20.4 Using two DV recorders 109 20.5 Down converters 109 20.5.1 The Evertz down converter 109 20.5.2 The \4iranda down converter 109 20.6 Sound delay lines 111 20.7 Playback packages 111 21 Shipping 112 21.1 It's not ENG! 112 21.2 Shipping lenses 112 21.3 Transit cases 113 21.4 Camera set-up when shipping 113 21.5 Size and weight 113 21.6 Batteries 113 22 Multi camera shoots 114 22.1 Synchronization 114 22.2 Time code on location 115 22.2.1 Lock It boxes 115 22.2.2 Script Boy 115 22.3 Time code in a studio 115 22.3.1 Genlock 116 22.4 Menu set-ups 116 22.4.1 The Sony RMB 150 116 22.4.2 Using memory sticks 117 22.5 Matching lenses 117 23 Hazardous conditions 118 23.1 Re-setting the trips 118 23.2 Water 119 23.3 Heat 119 23.4 Cold 119 23.5 Dust 119 23.6 Gamma rays 119 24 Camera supports 121 24.1 Fluid heads 121 24.2 Geared heads 121 24.3 Remote heads 122 24.4 Underwater 122 24.5 In the air 122 24.6 Motion control rigs 122 25 How HD affects other crafts 124 25.1 Art and Design 124 25.2 Costume 124 25.3 Make up and Hair 125 25.4 Sound 125 25.5 Script supervision and continuity 125 25.6 The second assistant cameraperson or ex-clapper boy 125 26 Troubleshooting 127 26.1 Stating the obvious 127 26.2 Problems and solutions 127 PART 5 Examples of Shoots 131 27 Some pictures shot HD, and why? 133 27.1 The Children of Dune 133 27.1.1 Rushes requirements 134 27.1.2 The extended playback facility 134 27.1.3 The equipment list 134 27.2 Birthdays 134 27.2.1 The studio shoot 135 27.2.2 The location shoot 136 27.2.3 Exterior tracking shots 137 27.2.4 Interior lighting 137 27.2.5 Adding gain 139 27.2.6 Editing Birthdays 139 27.2.7 Viewings 139 PART 6 Post-Production 141 28 Post-production: an overview 143 28.1 Generations 143 28.2 How the choice of edit suite affects the generation game 143 28.3 The route to a film copy 145 28.4 Non-photographic distribution 146 28.4.1 An international standard 146 28.4.2 Where might it be shown? 147 28.4.3 Time code considerations 148 29 The Sony HDW F500 VTR 149 29.1 VTRs in general 149 29.2 An overview of the HDW F500 149 29.3 Editing and playback 149 29.4 Simultaneous playback 149 29.5 Slow motion replay 150 29.6 High speed picture search 150 29.7 Digital jog sound 150 29.8 Vertical interval time-code read/write 150 29.9 The control panel 150 29.10 Remote control 151 29.11 In/out capacity 151 29.12 Optional plug-in boards 151 29.13 Cassettes 151 29.14 Changing the frame rate 151 29.15 Available frame rates 152 29.16 Power supplies 152 PART 7 Cameras 153 30 Cameras in general 155 30.1 The choice of cameras 136 30.2 My disclaimer! 156 31 The Arriflex D-20 157 31.1 The camera 157 31.2 The camera chip 159 31.3 Interface 159 31.4 Lenses 159 31.5 Recorders 159 32 The Dalsa Origin 163 32.1 The camera 163 32.2 The look through 164 32.3 The sensor 165 32.4 Interfaces 165 32.5 Conclusions on the Dalsa Origin 165 32.6 Currently available recorders 165 32.7 The Codex Digital Media Recorder 165 32.7.1 The touch screen 166 32.7.2 Monitoring via the Codex 167 32.7.3 Conclusions on the Codex 167 33 The Panasonic VariCam: AJ-HDC27H 168 33.1 The camera 168 33.2 Frame rates 168 33.3 Exposure times 169 33.4 The chips and the processor 169 33.5 The VTR 169 33.6 Time code 170 33.7 An overview 170 34 The Panavision Genesis 171 34.1 The camera 171 34.2 Menus 173 34.3 White balance 174 34.4 The camera sensor 174 34.5 Formats, outputs and interface 175 34.6 Viewing logarithmic images 175 35 The Panavision HDW 900F 176 35.1 Introduction 176 35.2 External modifications 176 35.2.1 The top handle 176 35.2.2 The viewfinder support 177 35.2.3 The viewfinder 178 35.2.4 The camera front plate and lens mount 178 35.2.5 The camera base plate 178 35.2.6 The voltage distribution box 179 35.3 Internal modifications 179 35.3.1 The internal filter 179 35.3.2 Electronic definition enhancement 179 36 The Sony HDW F750P and the F730 HD cameras 181 36.1 Frame rates 181 36.2 The camera body 1 8 1 36.3 Add-in boards, etc. 182 36.4 Image control via the menus 184 36.4.1 Multi matrix 184 36.4.2 Auto tracing white balance 184 36.4.3 Color temperature control 184 36.4.4 Selectable gamma curves 1 S4 36.4.5 RGB gamma balance 184 36.4.6 Variable black gamma range 184 36.4.7 Black stretch 185 36.4.8 Adaptive highlight control (auto knee mode) 185 36.4.9 Knee saturation function 185 36.4.10 The triple skin tone detail control 185 36.4.11 Level depend detail 185 36.5 Meta-data handling 185 36.6 The Sony Tele-File system 185 36.7 The optional HD SDI adapter 185 36.8 An overview 185 37 The Sony HDW F900R 187 37.1 The camera 187 37.2 The chips 188 37.3 The processor 188 37.4 Additional facilities 189 37.5 Menus 189 37.6 Overall impressions 189 38 The Thomson Viper HD camera 190 38.1 The camera body 190 38.2 Outputs from the camera 190 38.3 Recording a FilmStream signal 190 38.4 The Director's Friend 192 38.5 The beam splitter 194 38.6 The Vipers CCD array 194 38.7 The mechanical shutter 194 38.8 Frame rates 194 38.9 Resolution 194 38.10 The cameras processor configuration 194 38.11 The camera back 196 38.12 The arguments for a logarithmic recording format 196 38.13 Lenses for the Viper 196 38.14 Monitors for the Viper 197 38.15 Camera accessories 197 38.16 Shipping the Viper 197 PART 8 Camera Menus 199 39 Menus in general 201 40 The HDW F900 menus 202 40.1 Using the menus 202 40.1.1 The layout of the menus 203 40.1.2 Using the menus: some warnings 204 40.2 The Operation Menu 207 40.2.1 VF DISPLAY page 207 40.2.2 '!' INDICATOR page 207 40.2.3 MARKER page 207 40.2.3.1 MARKER 208 40.2.3.2 CENTER 209 40.2.3.3 SAFETY ZONE 209 40.2.3.4 EFFECT 209 40.2.3.5 ASPECT MODE 210 40.2.3.6 MASK 210 40.2.4 GAIN SW page 212 40.2.5 ZEBRA/VF DTL page 212 40.2.6 AUTO IRIS page 213 40.2.7 BATT ALARM page 213 40.2.8 OTHERS page 214 40.2.9 OPERATOR FILE page 215 40.2.10 LENS FILE page 217 40.3 The Paint Menu 217 40.3.1 SW STATUS page 218 40.3.2 VIDEO LEVEL page 219 40.3.3 GAMMA page 221 40.3.4 BLACK GAMMA page 222 40.3.5 LOW KEY SATURATION page 222 40.3.6 KNEE page 222 40.3.7 DETAIL 1 page 223 40.3.8 DETAIL 2 page 225 40.3.9 SKIN DETAIL page 226 40.3.10 USER MATRIX page 228 40.3.11 MULTI MATRIX page 230 40.3.12 SHUTTER page 231 40.3.13 SCENE FILE page 232 40.4 The Maintenance. File and Diagnostic Menus 235 40.4.1 PageM7 235 Index 239 |