BAC Architectural Sketching/Rendering Techniques.

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  • BAC

    Architectural Sketching/Rendering Techniques

  • The Nature of COLORColor is a visual reaction to a light source. An illusion of the senses. The True color of an object can only be seen accurately by sunlight or its equivalent, since sunlight contains all colors of the spectrum.Black is not a color, its the absence of color.

  • colorPrimary Colors -Subtractive mix (pigments) - The color wheel can be constructed our of three basic colors or hues: Red, Blue, and Yellow. The sum of primaries= blackPrimary Colors -Additive mix- The color wheel can be constructed out of three basic colors: Cyan, Magenta, and light yellow. The sum of primaries= White

  • colorSecondary colors: the result of the addition of two primary colorsComplementary color: The opposite color in the color wheel has the property of balancing the firstHue: The definition of the color. Example: blue, red, orange.Value: The scale of darknessChroma or tint: The saturation of the color

  • ValueGrayscale

    Value has visual weight

  • ValueGrayscale

    Value has visual weight

  • Art ElementsLine do not define linesSpace Empty space counts as visual weightColor limit paletteVolume equal weightEmpty space Angled chair in foregroundcreates depthIsolation creates focus of Attention =visual weight=Mid-groundBackground

  • DepthBackgroundMid-groundForeground

  • CompositionAll images are essentially arrangement of lights and darks, or linear arrangementsYou cannot avoid making your subject a tonal statement or a linear statementOr bothLine is contourTone is form, space and the third dimension

  • Formal Composition

  • Informal Composition

  • Informal Composition Applied

  • A Rendering Put to the test

  • Watercolor TechniquesWet on wet essential for skies- wet paper, wet brush

    Dry brush Do not pre-wet paper, only dip color in brush

  • Image reference wet on wet

  • Image Reference -Dry BrushDry brush

  • Combined Wet and Dry

  • Skies and treesUse a sponge with dissolved pigment to wet a sky, lift some areas with a tissue for clouds effectSuggest bark of the tree, do now draw it, the least definition and more suggestion, the best.Apply green strokes to suggest trees by pressuring and lifting bamboo brush off he paper. Always combine different hues of green and yellow for leaves

  • Acrylic Paint With Artist KnifeUse of spatula and acrylic paint

  • Charcoal

  • Ink Rendering

  • 3 Renderings One Themepen & inkcharcoalpen & ink with watercolor

  • Freehand PhotoshopRenderingImage

  • To rememberA bad sketch can be improved with colorAn excellent sketch can be DESTROYED with colorDo not finish your workLimit your paletteUse the white of the paperCast shadows are darker than object shadowsDo not use black, use ultramarine blueStart with the lighter color and work your way to darker huesWork from background to foregroundMountains are always blue (its an atmosphere effect)

  • The 12 rules of watercolor renderingSelect point of interestSelect mood (warm or cool) depending on time of the dayChoose a limited palette (no more than 6 colors, ideally 4 or 5)Find your light source (where is the light coming from?)Background mid-ground and foreground in that orderApply a base color, the lightest chroma of your main hue (leave white highlights unpainted)Apply darker chroma to designated spaces (do not abuse it, keep it transparent)Do details effects (suggest a little, do not paint an entire brick wall, suggest a few bricks only)Balance it out with trees and people. Scale creates perspective & dimensional referenceA watercolor should take minutes to complete, (it dries fast), work at 45 degree angle for fluid controlIts a reference, not a masterpiece, its documentative, not anatomical.Capture the gist of the scene! PRACTICE

  • Materials for watercolors (essentials)140lb Hot or cold press watercolor paper (cold press is more grainy more textured)Bamboo brushes (they can produce any width of line by applying pressure on paper)SmallLargeVery fine (for details)Square brush for sky or wide areasUse animal hair brushes, they hold more liquid.Never leave a brush inside water (it widens the brush like a fan)Spray bottle (to work wet-on-wet)Salt for sand effectNapkins tissueNatural sponge (for clouds)Masking tapeTooth brush (to spatter on trees and/or create sand effect or rocks, also can be used to suggest brick, or other grainy materials

  • Charcoal WorkCharcoal is a media that captures the quality of lightTypes or charcoal: Vine stick or compressed:vine for gesture drawing soft compressed for volume studiesApply a layer of tone and work your way to lightApply darker tone in deep shadowed areas

  • Artist Knife and Acrylic Paint WorkUse a small spatula for detailA large spatula for larger areasBe sure to have enough paint in the edgeUse the edge for lines

  • Ink WorkCrosshatching TechniqueTechnical penBamboo Brush TechniqueBrush, ink stick and grinderScribbling techniqueTechnical pen or fine brush

  • Book referencesThe Watercolourists Guide to Painting Buildings -Richard Taylor

    (This book is the best of its kind, architecture illustrations with an unfinished touch that emphasizes suggesting rather than detailing)

    Architectural Drawing Course Mo Zell (This book is a good reference for different rendering techniques both free-hand and computer based)



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