Leonardo da Vinci, Mona Lisa, c. 1503-1519

Leonardo da Vinci

1452–1519 · Italy

A Florentine who never started on a blank panel, built form under dozens of thin glazes, and worked some pictures for a decade without calling them done.

ProcessLayered TemperamentImaginative LineageRenaissance

Signature moves

Drop the shadow value slowly, with no visible line

Built the modeling out of up to roughly thirty microscopic translucent oil glazes and scumbles laid over dried underlayers, with a high oil-to-pigment ratio, lowering the shadow value by degrees.

Why it matters · A hard line between light and shadow reads as an edge, not a turn in space. When the value drops across many thin layers instead of one opaque pass, the form turns without ever announcing where the shadow begins. The patience is the whole effect. One layer cannot do it.

Gemini Deep Research, 5 famous painters, 2026 — Compiled from the Materials and technique section.

Prepare exhaustively, never start blank

Worked out anatomy and composition in sketches on paper first, then transferred them to the panel by spolvero, pricking holes along the lines and pouncing charcoal through them.

Why it matters · The drawing problem and the painting problem are different problems. Solving placement on paper means the panel is never a guessing field. Infrared imaging found this pounced underdrawing beneath the Mona Lisa's forehead and hands, so even the most famous "spontaneous" face sits on a transferred plan.

Gemini Deep Research, 5 famous painters, 2026 — Process from blank canvas section.

Refuse the medium that forbids revision

Rejected buon fresco for The Last Supper because its wet plaster allows no slow reworking, and invented an experimental dry-wall method on a gesso, pitch, and mastic ground instead.

Why it matters · The material has to match how you actually work. Leonardo reworked endlessly, and fresco demands a section be finished in a day. So he chose a method that let him revise. The method failed chemically and began flaking in his own lifetime, which is the honest cost of choosing revision over permanence.

Gemini Deep Research, 5 famous painters, 2026 — Materials and technique section.

Paint when the light is soft, not bright

Diffused the sun with canvas awnings stretched over courtyards and favored dusk or overcast weather for portraits, because the softest shadows gave the most grace.

Why it matters · Hard direct light cuts the face into flat planes of black and white. Soft light keeps the half-tones, and the half-tone is where the modeling lives. If you control the light at the source, the painting is easier before you have made a single mark.

Leonardo, Trattato della pittura (compiled by Melzi), 1651

Work in long bursts, then stop cold

On The Last Supper, Matteo Bandello saw him climb the scaffold at sunrise and paint until dusk forgetting to eat, then on other days stand and stare for hours without a mark, or leave it for three or four days.

Why it matters · Output is not steady, and pretending it should be produces forced work. The staring is part of the painting. The decision of where the next stroke goes can take longer than the stroke. A reader who measures progress only in marks made will quit on the staring days.

Matteo Bandello, Novelle, 1554

Find landscapes in stains on a wall

For invented backgrounds, stared at walls splashed with stains, at ashes and puddles, until he saw mountains, ruins, rocks, and woods in them, then reduced the hallucination to drawn form.

Why it matters · Invention does not have to start from nothing. A random texture gives the eye something to push against, and the mind supplies the rest. The skill is the second half: taking the thing you imagined and pinning it down as actual form. The prompt is free. The reduction is the work.

Leonardo, Trattato della pittura (compiled by Melzi), 1651

Let a picture run for years rather than declare it done

Rarely treated a painting as finished; worked the Mona Lisa over the course of a decade.

Why it matters · Some paintings are not a sprint. Holding a picture open for years means returning to it with a changed eye and finding what the last pass missed. The risk is the opposite of overwork, which is never letting go. Leonardo lived on that edge on purpose.

Gemini Deep Research, 5 famous painters, 2026 — Process from blank canvas section.

In the studio

Presumed self-portrait of Leonardo da Vinci in red chalk — Leonardo da Vinci, presumed self-portrait, red chalk, c. 1512, Biblioteca Reale, Turin

Studio

Light: Controlled obsessively. Canvas awnings stretched over courtyards to diffuse the sun; dusk or overcast weather preferred for portraits because the shadows are softest and most graceful.
Position: Worked on panel. On The Last Supper he climbed a scaffold at the wall.
Session length: Uneven. Sunrise-to-dusk bursts so absorbed he forgot to eat, alternating with days spent staring without a mark, or leaving the work for three or four days.
Tools: Paper for anatomical and compositional sketches · Pricked cartoons for spolvero transfer (charcoal pounced through pin-holes) · Fine brushes for thin oil glazes and scumbles
Notes: Believed a painter needs isolation and warned that company breeds complacency. Dissected cadavers to learn anatomy directly.

Source: Matteo Bandello, Novelle, 1554 — Eyewitness account of Leonardo at work on The Last Supper.

Palette

Ground: On panel. For The Last Supper, an experimental dry-wall ground of gesso, pitch, and mastic instead of fresh fresco plaster. The method failed chemically and began flaking in his lifetime.
Medium: Thin oil-and-tempera layers on panel. Sfumato built from up to roughly thirty microscopic translucent oil glazes and scumbles over dried underlayers, with a high oil-to-pigment ratio.

Source: Gemini Deep Research, 5 famous painters, 2026 — Materials and technique section. The research does not specify individual pigment names for Leonardo, so those slots are left empty rather than guessed.

Workflow, from blank canvas

1. Sketches on paper
Anatomical and compositional studies worked out on paper before the panel was touched.
Why: The composition is solved where it is cheap to solve it. The panel never becomes the place to find the drawing.
2. Spolvero transfer
The resolved drawing pricked with holes along its lines, then charcoal pounced through onto the panel.
Why: Carries the solved drawing to the panel exactly. Infrared shows this pounced underdrawing beneath the Mona Lisa's forehead and hands.
3. Tonal block-in, dark to light
The forms established tonally, building from dark up through opaque mid-tones and lights.
Why: Sets the value structure of the whole panel before any glazing. The modeling has to exist in tone first.
4. Years of dark glazes over the shadows
Many thin, semi-transparent glazes laid over the dried shadows, dropping their value by slow degrees with no visible line.
Why: This is where sfumato happens. The shadow deepens across dozens of layers, so the form turns without an edge. It cannot be rushed into one pass.
5. Rarely finished
The picture held open and reworked, sometimes for years. The Mona Lisa ran across roughly a decade.
Why: A changed eye on a later day finds what the earlier passes missed. Finish is not a fixed point for Leonardo; it is something he kept deferring.

Refusals — what they would not do

Refused buon fresco for The Last Supper because its wet plaster allows no slow revision.
Refused to start on a blank panel. Preparation was exhaustive, and transfer came before paint.
Refused steady company in the studio; held that it breeds complacency and that a painter needs isolation.
Refused bright direct light for portraits, choosing dusk, overcast, or a diffusing awning instead.
Refused to call a picture finished on schedule; the Mona Lisa ran for about a decade.

Reference

Primary source: Rigorous direct observation. Dissected cadavers to study anatomy at first hand.

Exceptions

For invented backgrounds, used abstract prompts. Stared at stained walls, ashes, and puddles until landscapes, mountains, ruins, and woods appeared, then reduced what he saw to drawn form.

Lineage

Teachers

Andrea del Verrocchio · apprenticed 1466; in the guild by 1472; stayed as assistant to 1477 — Florentine workshop training. Leonardo entered as an apprentice in 1466 and remained as an assistant for years after qualifying.

Students

Francesco Melzi, the pupil who inherited the notebooks and compiled them into the Treatise on Painting (the Trattato della pittura).

In their own words

“He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast.”

— Leonardo da Vinci, Treatise on Painting (Trattato della pittura), compiled by Francesco Melzi, 1651

“If you have a courtyard, cover it at will with a canvas awning. This light is good. Or paint your sitter in bad weather, or at dusk.”

— Leonardo da Vinci, Treatise on Painting (Trattato della pittura), compiled by Francesco Melzi, 1651

On controlling the light for portraits.

“Look at walls splashed with stains... you will see the likeness of divine landscapes, mountains, ruins, rocks, woods.”

— Leonardo da Vinci, Treatise on Painting (Trattato della pittura), compiled by Francesco Melzi, 1651

On finding invented compositions in abstract textures.

“Acquire accuracy before you attempt quickness.”

— Leonardo da Vinci, Treatise on Painting (Trattato della pittura), compiled by Francesco Melzi, 1651

Techniques and practices

Grisaille Underpainting

A complete tonal painting in black, white, and neutral grays executed before any color is applied, engineering value structure independently of chromatic decisions.

Tonal Imprimatura

A thin, neutral-colored wash applied over the full canvas before painting begins, killing the white and establishing a middle value.

If this painter is your match

You build a painting in layers and you think in what each layer does to the one beneath it. The shadow that turns without an edge is the whole point, and you know it takes more thin passes than anyone expects. Your risk is the same as his: holding a picture open so long it never gets to stand as finished.

Borrow this: Solve the drawing on paper first, then transfer it so the panel is never a guessing field. Block the form in tone, dark to light. Then deepen the shadows with many thin glazes instead of one opaque pass, and let the value drop by degrees with no hard line.

Adjacent painters

Isaac Levitan1860–1900

The Peredvizhniki lyricist who invented the Russian mood landscape by trusting memory over direct observation and finishing paintings by knowing when not to touch them.

Ivan Kramskoy1837–1887

The intellectual strategist of the Peredvizhniki, whose studio ran on analytical silence, early photographic reference, and the conviction that a portrait was a biography rather than a likeness.

William-Adolphe Bouguereau1825–1905

The Parisian academic master who ran his studio on a factory schedule—7 AM until dark, no lunch break—and resolved every figure, every fold, and every leaf in preparatory studies before a single brushstroke landed on the final canvas.

Lawrence Alma-Tadema1836–1912

The Dutch-born Victorian archaeologist-painter who built a private library of five thousand photographs of Roman ruins, reconstructed marble and bronze from the actual excavations at Pompeii, and resolved every canvas as if he were producing forensic evidence that the ancient world looked exactly the way it did.

Shared the workbench

Other researched painters who used at least one of Vinci’s techniques.

Howard Pyle1853–1911

The Wilmington illustrator and teacher who founded the Brandywine School, built the first serious atelier in American narrative painting, and transmitted three pedagogical principles—personal knowledge, the dramatic moment, paint the light and air—to N.C. Wyeth, Harvey Dunn, Frank Schoonover, and the whole golden age of American illustration.

Norman Rockwell1894–1978

The Saturday Evening Post cover painter (323 covers, 1916-1963) whose multi-stage process—casting, staging, photographing, charcoal cartoon, color comprehensive, full oil—industrialized narrative realism and turned the American small-town tableau into one of the most widely disseminated image systems of the twentieth century.

Maxfield Parrish1870–1966

The New Hampshire fantasy illustrator whose multi-layered glaze-and-varnish technique—monochrome underpainting, successive transparent color glazes, intermediate dammar varnish layers—produced the specific luminous surface of Daybreak (1922) and the "Parrish blue" palette that defined American commercial decoration between 1895 and 1935.

Ilya Repin1844–1930

The Peredvizhniki history painter and portraitist who worked from zenith-lit studios, standing, from long social sittings, and painted monumental scenes from years of field observation.

Ivan Shishkin1832–1898

The Peredvizhniki landscape master who lived in the forest in summer and reconstructed its anatomy in the studio in winter, using photography and projection as tools of discipline rather than shortcuts.

Isaac Levitan1860–1900

The Peredvizhniki lyricist who invented the Russian mood landscape by trusting memory over direct observation and finishing paintings by knowing when not to touch them.

Primary sources

Leonardo, Trattato della pittura (compiled by Francesco Melzi, published 1651), 1651. Leonardo's own teaching on painting, assembled from the notebooks by his pupil Melzi. The source for his rules on light, on theory before practice, and on finding compositions in stains.
Matteo Bandello, Novelle, 1554. Records an eyewitness account of Leonardo's uneven working rhythm on The Last Supper, the sunrise-to-dusk bursts and the days spent staring.
Pietro da Novellara, Letter to Isabella d'Este (8 April 1501), 1501. Contemporary report on Leonardo's working life.