Avid Technology DS 5.0 Guia do Utilizador descarregar pdf (Página 21)

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KeylightThe Foundry

ADVANCED KEYING

Render

If you then set the 'Despill Bias' to be 25, you will keep the nice alpha, and

get a good despill as well (Figure 28).

Render

After picking the Screen Colour it’s useful to be able to view the key in

different ways. You can do this using the Render drop-down menu, shown

here in

Figure 29.

Figure 29. Render menu.

Here’s the complete list of options and what they do.

• Result - renders the foreground composited over the image on the

background track. This image is premultiplied. In other words, the RGB

values of pixels have been multiplied by their corresponding alpha

channel values.

Figure 27. Poor despill. Figure 28. Final Key, Using Separate Despill

and Alpha Biases.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 67 68

USER GUIDE 1
Keylight on Avid DS 1
Contents 3
CONTENTS 4
Keylight 4
The Foundry 4
Introduction 5
Other Foundry 6
Products 6
INTRODUCTION 7
Other Foundry Products 7
Getting Started 8
KeylightThe Foundry 10
GETTING STARTED 10
Quick Key 10
Figure 5. Keylight PPG 10
Figure 7. Final composite 11
Basic Keying 12
Figure 9. Render menu 13
BASIC KEYING 13
Screen Strength 14
Despill Bias 15
Advanced Keying 16
Screen Balance 17
ADVANCED KEYING 18
Biasing 18
The Bias Colours in 20
Why are there two 20
Bias Colours? 20
Unpremultiply 22
Screen Matte 24
Clip Levels 25
Clip Rollback 26
Grow & Shrink 27
Replacement 27
Inside & Outside 28
Cropping 30
Colour Correction 31
Edge Correction 32
Tutorial 34
TUTORIAL 36
Tutorial 1: Simple Key 36
Figure 64. Keylight PPG 36
Figure 66. Final composite 37
Tutorial 2: Fine 38
Tuning a Key 38
Figure 69. Final Composite 39
Tutorial 3: Extreme 40
Blue Spill 40
Figure 74. Final Composite 42
Tutorial 4: A Red 43
Green Screen 43
Tutorial 5: Inside 45
Tutorial 5: Inside Mattes 46
Figure 83. Status 46
Figure 84. Screen Strength 46
Figure 85. Clip Max 47
Figure 86. Clip Rollback 47
Figure 87. Despot 48
Figure 88. Composite 48
Figure 89. Inside Matte 49
Figure 90. Final Composite 49
Tutorial 6: Garbage 50
APPENDIX A 52
1. Avid DS 10.2.x 53
Release Notes 54
Keylight 1.0v2 Requirements 59
Keylight 1.0v1 Requirements 60
APPENDIX B 61
Appendix C 63
APPENDIX C 64
End User License Agreement 64
SECTION 8. LIMITED REMEDY 65
SECTION 9. INDEMNIFICATION 65
SECTION 12. CONFIDENTIALITY 66
SECTION 13. INSPECTION 66
SECTION 14. NONSOLICITATION 66
SECTION 16. SURVIVAL 67
SECTION 18. MISCELLANEOUS 67

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