Line, Tone and Texture: The Three Building Blocks of Any Sketch

Whether an artist draws by hand or a photo effect creates a sketch look, the result relies on the same three building blocks: line, tone and texture.

Line

Lines define the edges of shapes and separate one object from another.

• Outlines trace the boundary of a subject.
• Contour lines follow the surface of a form, such as the curve of a cheek.
• Line weight, thick or thin, adds emphasis and depth.
• Line quality, smooth or scratchy, sets the mood.

In a sketch-style photo, lines often appear where the photo has strong edges: a jawline, a rooftop, a tree trunk.

Tone

Tone (or value) is how light or dark an area is. It creates the feeling of light, shadow and volume.

Tone	Effect
Light tones	highlights, bright surfaces
Mid tones	the body of a form
Dark tones	shadows, depth, contrast

A drawing with a full range of tones, from near white to deep dark, feels solid and three-dimensional. One with only mid tones feels flat.

Texture

Texture is the visual feel of a surface: rough bark, soft fur, smooth glass.

• Artists suggest texture with marks: dots, dashes, hatching, scribbles.
• Repeated marks build up an impression of fabric, hair or stone.

Sketch effects often exaggerate texture, which gives them their hand-made look.

How they work together

Element	What it does
Line	shows shape
Tone	shows light and volume
Texture	shows surface

A good sketch balances all three. Too much line looks like a cartoon; too much tone without line can look smudgy.

Seeing them in your photos

When you apply a sketch effect, look at:

1. Where the lines fall. Do they follow the important edges?
2. How dark the shadows become. Is there enough contrast?
3. What texture appears. Does it suit the subject?

Choosing photos that suit

Photos with clear edges, good contrast and interesting texture give the most convincing results: a weathered door, a face in side light, a tree in winter.

Practise seeing

Look at a room and try to notice its main lines, its lightest and darkest areas, and its textures. This trains your eye, and helps you choose better photos.

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