Arts & Culture
Tempera vs. Oil Painting: Key Differences
Quick fact
Tempera paint dries almost instantly, forcing artists to work in precise, overlapping strokes, while oil paint can remain workable for days, allowing subtle blending and layered glazes.
Why this is interesting
When you look at a luminous Renaissance altarpiece and a rich, vivid Baroque painting, have you ever wondered why they feel so different? The answer lies not just in the artist's skill, but in the very different paints they used.
Read the full explanation
Understanding Tempera vs. Oil Painting: Key Differences
Tempera and oil are both traditional painting mediums, but their binders create opposite working properties. Tempera uses egg yolk mixed with pigment and water, creating a fast-drying, water-soluble paint. Artists must apply it in thin, semi-transparent layers using hatching or small strokes, as blending on the canvas is nearly impossible. The finished surface is matte with a soft, almost pastel-like luminosity. Oil paint, on the other hand, uses drying oils like linseed or walnut, which stay wet for hours or days. This allows blending colors directly on the canvas, creating smooth transitions, rich impasto textures, and transparent glazes that trap light for deep, jewel-like colors. The result is glossy and highly saturated.
A deeper explanation
The core difference is chemical: egg tempera dries by water evaporation and then oxidation of the egg yolk, forming an insoluble protein film within minutes. This forces a 'step-by-step' technique where each stroke is deliberate and overlays the previous one. Oil paint dries by a slow oxidation and polymerization of the oil molecules, allowing the painter to manipulate the paint over long sessions. This enabled techniques like 'sfumato' (smoky blending) and layered glazes that create realistic shadows and depth. Historically, tempera was dominant until the early Renaissance, then oil superseded it because it allowed greater realism, especially in portraiture and landscapes. The choice also affects durability: tempera is extremely stable over centuries, while oil can yellow or crack if applied improperly. Understanding these differences helps explain why paintings from different eras look and feel so distinct.