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Comp 767: Advanced Topics in GraphicsComp 767: Advanced Topics in Graphics
Introduction to WatercolorIntroduction to Watercolor
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Properties of WatercolorProperties of Watercolor
Watercolor materialsWatercolor materials
Watercolor paperWatercolor paper
PigmentPigment
Watercolor effectsWatercolor effects
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Watercolor PaperWatercolor Paper
Typically not made of wood pulpTypically not made of wood pulp
But from linen or cotton ragspounded into small fibers
Extremely absorbent to liquids
Slows down the rate ofSlows down the rate of waterabsorption and diffusion
Source: misterart.com
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PigmentPigment
Source: misterart.com
A pigment is a solid material inthe form of small, separate
particles (ranging from 0.05 to0.5 microns)
Pigments vary in density
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Properties of watercolorProperties of watercolor
Watercolor effectsWatercolor effects
DryDry--brush effectsbrush effects
Edge darkeningEdge darkening Intentional backrunsIntentional backruns
Granulation and SeparationGranulation and Separation
Flow PatternsFlow Patterns
GlazingGlazing
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DryDry--brush Effectsbrush Effects
TechniquesTechniques
Dry brush that isDry brush that isalmost driedalmost dried
Applied at a properApplied at a properangleangle
EffectsEffects
Irregular gapsIrregular gaps
Ragged edgesRagged edges
Source: Computer Generated Watercolor
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Edge DarkeningEdge Darkening
TechniquesTechniques
WetWet--onon--dry brushstrokedry brushstroke
EffectEffect
Darken edgesDarken edges
Source: Computer Generated Watercolor
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Intentional BackrunsIntentional Backruns
Occurs whenOccurs whenA puddle of water spreadA puddle of water spread
back into a damp region ofback into a damp region ofpaintpaint
A wash brush dries unevenlyA wash brush dries unevenly
The water tends to pushpigment along as it spreads
EffectEffect Complex branching shapesComplex branching shapes
Severely darkened edgesSeverely darkened edgesSource:
Computer Generated Watercolor
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Granulation and Separation ofPigmentsGranulation and Separation ofPigments
Granulation of pigmentsGranulation of pigments
Yields a kind of grainy texturesYields a kind of grainy textures
Varies from pigment to pigmentVaries from pigment to pigment
Strongest when paper is veryStrongest when paper is verywetwet
Separation of pigmentSeparation of pigment
Refers to splitting of colorsRefers to splitting of colors
Occurs when denser pigmentsOccurs when denser pigmentssettle earlier than lighter onessettle earlier than lighter ones
Source:
Computer Generated Watercolor
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Flow PatternsFlow Patterns
In wetIn wet--inin--wet paintingwet painting
wet surface allows thebrushstrokes to spread freely
EffectsEffects
Soft, feathery shapes
Source:
Computer Generated Watercolor
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GlazingGlazing
Techniques
Adding very thin, pale layers,or washes, of watercolor, one
over another Different pigments are not
mixed physically, but optically
EffectsEffects luminous
glowing from within
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SummarySummary -- WatercolorWatercolor
Summary of Watercolor effects
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Lesson ObjectivesLesson Objectives
Students willStudents willexplore watercolorexplore watercolorin order toin order tounderstand itsunderstand itsproperties.properties.
Students willStudents willdemonstrate andemonstrate anunderstanding ofunderstanding ofwatercolorwatercolortechniques in ordertechniques in ordercreate valuecreate value
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Using watercolor in different ways, helps create variety in aUsing watercolor in different ways, helps create variety in a
work of art. Lets look at different brush strokes.work of art. Lets look at different brush strokes.
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Lesson 1: Creating different brush strokesLesson 1: Creating different brush strokes
This exercise willThis exercise willhelp you learn how tohelp you learn how touse your paint brushuse your paint brushin order to createin order to createdifferent brushdifferent brushstrokes.strokes.
These techniques thatThese techniques thatyou learn will reallyyou learn will reallyhelp you behelp you besuccessful in yoursuccessful in yourfinal composition.final composition.
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Create different brush strokes depending on how muchCreate different brush strokes depending on how much
water is on your brush.water is on your brush.
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By using a dry brush you can create brushBy using a dry brush you can create brush
strokes like thisstrokes like this
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You can create smooth brush strokes by using more water.You can create smooth brush strokes by using more water.
Also, notice how by using more paint on one side of yourAlso, notice how by using more paint on one side of your
brush will creates different values.brush will creates different values.
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Even brush strokes are created by an equal amount of paintEven brush strokes are created by an equal amount of paint
and water, and also a smooth stroke.and water, and also a smooth stroke.
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Do this nowDo this now
Create a single page painting in yourCreate a single page painting in yoursketchbook using different amounts ofsketchbook using different amounts ofwater.water.
Divide your page into three areas andDivide your page into three areas andcreate these three types of brushcreate these three types of brushstrokes.strokes.
This should take you 15This should take you 15--20 minutes.20 minutes.
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Lesson 2: Background WashLesson 2: Background Wash
Using more waterUsing more waterand less pigmentand less pigment
DemoDemo
Draw 3 boxes ofDraw 3 boxes of
15cm x 20 cm15cm x 20 cm Paint 3 backgroundPaint 3 background
washes with 3washes with 3differecnt colours.differecnt colours.
This should take youThis should take you
30 min.30 min.
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Lesson 3: TextureLesson 3: Texture
Using different brushUsing different brushstrokes instrokes incollaboration withcollaboration withone another canone another cancreate the idea ofcreate the idea of
different texture.different texture.
DemoDemo
Divide your paperDivide your paperinto thirds and createinto thirds and create
three differentthree differenttextures.textures.
This should take youThis should take you20 minutes.20 minutes.
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ExampleExample
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Lesson 4: Values ScaleLesson 4: Values Scale
You will create threeYou will create three
value scales in yourvalue scales in your
sketchbook by using asketchbook by using a
different brush strokes.different brush strokes.
DemoDemo
Tip:Tip: Different amountsDifferent amounts
of water, along withof water, along with
different types of brushdifferent types of brushstrokes creates variety.strokes creates variety.