Color and Light

Lời giới thiệu

Quyển sách này khảo sát 2 công cụ cơ bản nhất cho người họa sĩ: Màu Sắc và Ánh Sáng. Nó được dành cho các nghệ sĩ trên tất cả các lĩnh vực đa phương tiện theo cách tiếp cận tat thực truyền thống, cũng như cho tất cả những ai tò mò về các hoạt động của thế giới thị giác.

Khi ở trường nghệ thuật, tôi đã tham gia một lớp học về hội họa bằng cách cắt nhiều mảnh màu phẳng bằng dao và dán chúng vào vòng tròn màu và thang màu xám. Tôi đã mất nhiều tháng để học cách tô các mảnh màu trơn một cách hoàn hảo và cố gắng tách chúng thành các bước một cách hoàn hảo và phân chúng vào các bước trong dải màu.

Sau cuối mỗi ngày đó tôi rời lớp và nhìn lên các mảng màu trên bầu trời, cây cối và trên các mặt nước quanh tôi. The sky was not composed of adjacent flat colors, but rather of an infinite variety of gradating hues. Why did dark colors turn blue as they went back toward the horizon—except in a few instances, such as in the painting opposite, when a setting sun casts the far vista in orange light? Why did the leaves have a sharp yellow-green color when the light shined through them, but a gray- green color on top?

In school I was learning how to see and mix color, but I had no idea how to apply this experience to real-world painting problems. Color theory seemed more like a branch of chemistry or mathematics, a separate science that had little to do with making a realistic painting. I felt like a piano student who had played a lot of scales, but had never gotten around to the melody.

If there were answers to my questions about how light interacts with color, atmosphere, water, and other materials,

I would have to find them in fields like physics, optics, physiology, and materials science. I started digging back into art instruction books from more than seventy-five years ago, when it was taken for granted that artists were trying to create an illusion of reality. Artists as far back as Leonardo da Vinci were struggling to explain the behavior of the visual world around them. Each old book had its vein of gold, but the information needed to be translated and updated for our times, and the old theories needed to be tested against recent scientific discoveries.

I investigated recent findings in the field of visual perception and found that many of my assumptions were mistaken, even about such basic things as the primary colors. I learned that the eye is not like a camera, but more like an extension of the brain itself. I learned that moonlight is not blue. It only appears blue because of a trick that our eyes are playing on us.

During the last few years, since the release of Dinotopia: Journey to Chandara, I have taught workshops at a lot of art schools and movie studios.

I have also kept up a daily blog that explores the methods of the academic painters and the Golden Age illustrators and have adapted some of the blog content into my recent book, Imaginative Realism: How to Paint What Doesn’t Exist. As I assembled that volume, I realized that the information on color and light was so extensive—and so popular with blog readers—that I decided it required a second volume.

This book begins with a survey of historic masters who used color and light in interesting ways. Although those paintings are a tough act to follow, for the rest of the book I’ll use my own paintings— both observational and imaginative—as examples. Since I painted them, I can tell you what I was thinking when I made them. Chapters 2 and 3 examine the various sources of light, and we look at how liaht creates the illusion of three-dimen- sional form. Chapters 4 and 5 cover the basic properties of color as well as an introduction to pigments and paints. Chapters 6 and 7 present the method I use called gamut mapping, which helps in choosing colors for a given picture.

The last chapters of the book deal with specific challenges that we face when we paint textures like hair and foliage, followed by the infinitely varied phenomena of atmospheric effects. The book ends with a glossary, a pigment index, and a bibliography.

This book doesn’t contain recipes for mixing colors or step-by-step painting procedures. My goal is to bridge the gap between abstract theory and practical knowledge. I would like to cut through the confusing and contradictory dogma about color, to test it in the light of science and observation, and to place it in your hands so that you can use it for your own artistic purposes. Whether you work in paint or pixels, fact or fantasy, I want this book to bring color and light down to earth for you.

 

CONTENTS

CHAPTER 1: TRADITION

  • Old Masters’ Color
  • The Academic Tradition
  • Open-Air Painting in Britain
  • The Hudson River School
  • Plein-Air Movements
  • Symbolist Dreams
  • Magazine Illustration

CHAPTER 2: SOURCES OF LIGHT

  • Direct Sunlight
  • Overcast Light
  • Window Light
  • Candlelight and Firelight
  • Indoor Electric Light
  • Streetlights and Night Conditions
  • Luminescence
  • Hidden Light Sources

CHAPTER 3: LIGHT AND FORM

  • The Form Principle
  • Separation of Light and Shadow
  • Cast Shadows
  • Half Shadow
  • Occlusion Shadows
  • Three-Quarter Lighting
  • Frontal Lighting
  • Edge Lighting
  • ContreJour
  • Light from Below
  • Reflected Light
  • Spotlighting
  • Limitations of the Form Principle

CHAPTER 4: ELEMENTS OF COLOR

  • Rethinking the Color Wheel
  • Chroma and Value
  • Local Color
  • Grays and Neutrals
  • The Green Problem
  • Gradation
  • Tints

CHAPTER 5: PAINT AND PIGMENTS

  • The Search for Pigments
  • Charting Pigments
  • Lightfastness
  • Warm Underpainting
  • Sky Panels
  • Transparency and Glazing
  • Palette Arrangements
  • Limited Palettes
  • The Mud Debate

CHAPTER 6: COLOR RELATIONSHIPS

  • Monochromatic Schemes
  • Warm and Cool
  • Colored Light Interactions
  • Triads
  • Color Accent

CHAPTER 7: PREMIXING

  • Mixing Color Strings
  • Gamut Mapping
  • Creating Gamut Masks
  • Shapes of Color Schemes
  • Mixing a Controlled Gamut
  • Color Scripting

CHAPTER 8: VISUAL PERCEPTION

  • A World without Color
  • Is Moonlight Blue?
  • Edges and Depth
  • Color Oppositions
  • Color Constancy
  • Adaptation and Contrast
  • Appetizing and Healing Colors

CHAPTER 9: SURFACES AND EFFECTS

  • Transmitted Light
  • Subsurface Scattering
  • Color Zones of the Face
  • The Hair Secret
  • Caustics
  • Specular Reflections
  • Highlights
  • Color Corona
  • Motion Blur
  • Photos vs. Observation

CHAPTER 10: ATMOSPHERIC EFFECTS

  • Sky Blue
  • Atmospheric Perspective
  • Reverse Atmospheric Perspective
  • Golden Hour Lighting
  • Sunsets
  • Fog. Mist. Smoke, Dust
  • Rainbows
  • Skyholes and Foliage
  • Sunbeams and Shadowbeams
  • Dappled Light
  • Cloud Shadows
  • Illuminated Foreground
  • Snow and Ice
  • Water: Reflection and Transparency
  • Mountain Streams
  • Color Underwater

CHAPTER 11: LIGHT’S CHANGING SHOW

  • Serial Painting
  • At the End of the Day

CHAPTER 12: RESOURCES

  • Glossary
  • Pigment Information
  • Recommended Reading
  • Acknowledgments
  • Index

Introduction

This book examines the painter’s two most fundamental tools: color and light. It is intended for artists of all media interested in a traditional realist approach, as well as for anyone who is curious about the workings of the visual world.

When I was in art school I took a color class that consisted of painting a lot of flat swatches, cutting them out with a sharp knife, and pasting them down into color wheels and gray scales. I spent months learning how to paint perfectly smooth swatches and trying to get the steps between them exactly even.

At the end of each day I would leave the classroom and look up at the colors of the sky, the trees, and the water around me. The sky was not composed of adjacent flat colors, but rather of an infinite variety of gradating hues. Why did dark colors turn blue as they went back toward the horizon—except in a few instances, such as in the painting opposite, when a setting sun casts the far vista in orange light? Why did the leaves have a sharp yellow-green color when the light shined through them, but a gray- green color on top?

In school I was learning how to see and mix color, but I had no idea how to apply this experience to real-world painting problems. Color theory seemed more like a branch of chemistry or mathematics, a separate science that had little to do with making a realistic painting. I felt like a piano student who had played a lot of scales, but had never gotten around to the melody.

If there were answers to my questions about how light interacts with color, atmosphere, water, and other materials,

I would have to find them in fields like physics, optics, physiology, and materials science. I started digging back into art instruction books from more than seventy-five years ago, when it was taken for granted that artists were trying to create an illusion of reality. Artists as far back as Leonardo da Vinci were struggling to explain the behavior of the visual world around them. Each old book had its vein of gold, but the information needed to be translated and updated for our times, and the old theories needed to be tested against recent scientific discoveries.

I investigated recent findings in the field of visual perception and found that many of my assumptions were mistaken, even about such basic things as the primary colors. I learned that the eye is not like a camera, but more like an extension of the brain itself. I learned that moonlight is not blue. It only appears blue because of a trick that our eyes are playing on us.

During the last few years, since the release of Dinotopia: Journey to Chandara, I have taught workshops at a lot of art schools and movie studios.

I have also kept up a daily blog that explores the methods of the academic painters and the Golden Age illustrators and have adapted some of the blog content into my recent book, Imaginative Realism: How to Paint What Doesn’t Exist. As I assembled that volume, I realized that the information on color and light was so extensive—and so popular with blog readers—that I decided it required a second volume.

This book begins with a survey of historic masters who used color and light in interesting ways. Although those paintings are a tough act to follow, for the rest of the book I’ll use my own paintings— both observational and imaginative—as examples. Since I painted them, I can tell you what I was thinking when I made them. Chapters 2 and 3 examine the various sources of light, and we look at how liaht creates the illusion of three-dimen- sional form. Chapters 4 and 5 cover the basic properties of color as well as an introduction to pigments and paints. Chapters 6 and 7 present the method I use called gamut mapping, which helps in choosing colors for a given picture.

The last chapters of the book deal with specific challenges that we face when we paint textures like hair and foliage, followed by the infinitely varied phenomena of atmospheric effects. The book ends with a glossary, a pigment index, and a bibliography.

This book doesn’t contain recipes for mixing colors or step-by-step painting procedures. My goal is to bridge the gap between abstract theory and practical knowledge. I would like to cut through the confusing and contradictory dogma about color, to test it in the light of science and observation, and to place it in your hands so that you can use it for your own artistic purposes. Whether you work in paint or pixels, fact or fantasy, I want this book to bring color and light down to earth for you.

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