Visual comparison of paint brush sizes by type
Round: Versatile, pointed tip for detail and lines.
Flat: Wide strokes, sharp edges, filling large areas.
Filbert: Rounded flat, blending and soft edges.
Fan: Texture, blending, foliage, feathering.
Sizes 0-2: Fine details, miniatures, eyes, highlights.
Sizes 4-8: General purpose, most painting tasks.
Sizes 10-16: Broad strokes, backgrounds, washes.
Sizes 18-24: Large canvases, underpainting, priming.