Campus TV, short “C-TV” is the name of 30 minutes of TV program, which students of the St. Pölten University of Applied Sciences Media Technology produce every month. All work in C-TVs productions is done by students. Every year, the most experienced students leave
the C-TV team, because they have successfully finished the education at the St. Pölten University of Applied Sciences Media Technology. As a result a lot of important knowledge leaves with these students. Every year a new team of students starts to work at C-TV and all
necessary things for producing 30 minutes of TV have to be learned again. Next to editing, or sound mixing which students learn during the education at the St. Pölten University of Applied Sciences Media Technology the important part of color correction often stays behind. Unlike editing, shooting, sound mixing or recording, color correcting is not a subject at the St. Pölten University of Applied Sciences Media Technology. As a result most of CTVs productions since C-TV has started its productions, two years ago, did not have any color correction. Facing these facts, this work aims to be a color correction guide for Apples Final Cut Pro. The software Final Cut Pro is used for editing in C-TVs workflow. Final Cut Pro also offers inbuilt color correction software, which is powerful enough to fulfill all needs to make C-TVs productions suitable for broadcast. The work starts off with a brief overview of color science explaining color spaces and technical background knowledge on video formats. Then the author explains how to use Final Cut Pro`s color correction tools from a beginner level on. All necessary tools, buttons, and sliders, for color correction in Final Cut
Pro are explained. The author uses practical examples, illustrated with pictures how to use Final Cut Pros color correction tools. Based on examples the work shows common mistakes, during shooting and gives ideas to solve these with color correction. Using examples of different movies the work illustrates how to create different color looks.
Table of Contents
1. Introduction In The Science of Color
2. Light
3. How The Eye Works
4. Rods , Cones
4.1 Cone Resolution
5. Additive And Subtractive Color
6. Color Spaces
6.1 Stimulus Specific Color Space
6.2 Devise Dependent Color Space
6.3 Video Color Spaces
6.4 Y, R-Y, B-Y
6.5 YUV
6.6 YCbCr
6.7 YPbPr
6.8 YIQ
7. Bit Depth
8. Subsampling
9. Basics of Color Correction
10. How To Calibrate The Video Preview Monitor
11. Basic Color Correction Tools
12. The Video Scopes
12.1 The Waveform Monitor
12.2 The Vector Scope
12.3 The Histogram
12.4 The RGB Parade
13. Range Check
14. The Broadcast Safe Filter
14.1 Using The Broadcast Safe Filter
14.2 The Different Options Of the Broadcast Safe Filter
12.2 Values Of The Broadcast Safe Filter
15. Frame Viewer
16. Correcting Bad Camera Adjustments
17. Color Correction With Other Built In Software Than Final Cut Pro
17.1 Adobe Premiere Pro and Adobe After Effects
17.2 Avid
18. Conclusion
Objectives and Topics
This thesis serves as a practical manual for students of the C-TV project at the St. Pölten University of Applied Sciences, aiming to provide a guide for color correction suitable for broadcasting using Apple's Final Cut Pro 7.0. It addresses the lack of formal education in color correction within the curriculum by explaining essential technical foundations and practical application techniques.
- Fundamentals of color science, color spaces, and technical video standards.
- Calibration procedures for video preview monitors to ensure accurate color assessment.
- Effective utilization of Final Cut Pro’s built-in color correction tools and video scopes.
- Workflows for ensuring broadcast-legal signal levels using Range Check and Broadcast Safe filters.
- Methodologies for correcting common shooting errors and matching disparate footage.
Excerpt from the Book
10. How To Calibrate The Video Preview Monitor
1. Set up the usual viewing environment.
2. Dim the lights in the room and take care of sun. Avoid any kind of lamp other and light reflections.
3. At least 30 minutes before you start calibrating, turn on the video preview monitor, to let it warm up.
4. Select “Bars“ in the monitor`s menu or playback bars from Final Cut Pro. To open the bars click on the bottom of the right corner of the preview window. Select “Bars and Tone -> Bars and Tones (PAL)”
5. Set the contrast to its centre point of 50%.
6. Turn down the chroma and brightness to 0% until the shades of color bars are just black / white.
7. Adjust the brightness control until: 7.5 Units is not quite visible and 11.5 Units is barley visible.
8. Turn up the contrast to adjust the white levels to its maximum. Then slowly turn down the contrast and stop, when the white begins to respond.
9. Change into the “blue-only mode“ from the monitor’s menu. This filters the red and greed colors of the picture. (fig.21)
10. Turn the chroma until the gray bar left and the blue bar right are equally bright.
11. Do the same for magenta and cyan bars and adjust the brightness until both are equally bright. The yellow green and red bar should now bee black and the other bard should be equally blue in intensity.
12. Change back from “blue only mode” into normal mode.
Your monitor is now properly adjusted. You can begin the color correction.
Summary of Chapters
1. Introduction In The Science of Color: Provides a brief overview of colorimetry and the human perception of light as a baseline for color correction.
2. Light: Explains the characteristics of light sources, color temperature in Kelvin, and how reflected light is perceived.
3. How The Eye Works: Details the human eye's biological mechanisms for measuring and detecting color via the retina.
4. Rods , Cones: Describes the distinct functions of rod and cone cells in capturing luminance and color information.
5. Additive And Subtractive Color: Distinguishes between RGB-based additive processes for screens and CMYK-based subtractive processes for print.
6. Color Spaces: Defines the mathematical representation of colors, covering device-dependent and stimulus-dependent spaces like YUV and YCbCr.
7. Bit Depth: Explains the importance of bit depth for signal quality and the reduction of artifacts in video encoding.
8. Subsampling: Discusses the technique of chroma subsampling as a method to save bandwidth in video storage and transmission.
9. Basics of Color Correction: Outlines the fundamental distinction between primary and secondary color correction and emphasizes the necessity of a calibrated monitor.
10. How To Calibrate The Video Preview Monitor: Provides a step-by-step procedure for correctly setting up a video monitor for broadcast standards.
11. Basic Color Correction Tools: Introduces Final Cut Pro's filtering system and the primary color correction tools available.
12. The Video Scopes: Explains the use of technical monitoring tools like Waveform, Vector Scope, Histogram, and RGB Parade.
13. Range Check: Describes the utility of Range Check to identify luminance and saturation values that fall outside legal broadcast limits.
14. The Broadcast Safe Filter: Examines the automated usage of the Broadcast Safe filter to ensure footage meets TV broadcasting compliance.
15. Frame Viewer: Demonstrates how to use split-screen techniques to match the look of different clips effectively.
16. Correcting Bad Camera Adjustments: Offers practical guidance on fixing white balance and exposure issues after shooting.
17. Color Correction With Other Built In Software Than Final Cut Pro: Briefly explores how similar workflows are handled in Adobe Premiere Pro, After Effects, and Avid.
18. Conclusion: Summarizes the thesis’s role as a helpful guide for C-TV students and suggests incorporating video tutorials for future iterations.
Keywords
Color Correction, Final Cut Pro, Broadcasting, Video Editing, C-TV, Luminance, Saturation, Waveform Monitor, Vector Scope, Color Space, Subsampling, Bit Depth, Broadcast Safe, White Balance, Colorimetry.
Frequently Asked Questions
What is the primary purpose of this thesis?
The thesis aims to provide a practical, beginner-friendly color correction manual specifically for students working in the C-TV project, utilizing Final Cut Pro to ensure their content meets professional broadcast standards.
What are the core thematic areas of the work?
The work covers theoretical color science, technical video signal properties, monitor calibration, hands-on usage of Final Cut Pro's color correction tools, and methods for ensuring broadcast legality.
Which scientific methods are used to approach the topic?
The author combines theoretical research on color science and light physics with practical, workflow-based demonstrations, utilizing professional video scopes and analytical filters to validate the correction process.
What is covered in the main body of the document?
The main body systematically progresses from the physics of color and light to specific digital video signal concepts, followed by a detailed technical manual on how to calibrate monitors and perform color correction in Final Cut Pro.
What are the key technical challenges addressed?
The work addresses the common issues of "illegal" broadcast levels, improper white balance, and the need for consistent visual aesthetics across different video clips in a collaborative student environment.
What distinguishes this guide for C-TV students?
Unlike general manuals, this work is tailored to the specific software environment (Final Cut Pro) and the unique production constraints faced by students at the St. Pölten University of Applied Sciences.
How does the author define "Broadcast Legal"?
The author refers to standard industry specifications, specifically explaining that luminance levels must remain within 0% to 100% ranges and that saturation must be constrained to avoid artifacts during transmission.
What is the importance of the "Vector Scope" in this workflow?
The Vector Scope is essential for verifying color saturation and hue accuracy, allowing the user to align skin tones and balance colors visually against established references.
Can this guide be applied to other software?
While focused on Final Cut Pro, the author acknowledges that the underlying principles—such as signal monitoring and broadcast legalities—are applicable to other professional suites like Adobe Premiere Pro and Avid.
- Quote paper
- Michael Alexander Geyer (Author), 2009, Broadcast Color Correction Guideline for C-TV Productions, Munich, GRIN Verlag, https://www.grin.com/document/150495
