Seeing Beyond Lines: The Illusion of Form

We usually perceive lines and shapes as forming a figure, while the paper and surrounding white space recede into the background. Yet, under certain conditions, what we assume to be background can itself acquire form and meaning. In the illustrations shown here, a clear geometric figure emerges—even though no lines actually define it. These visual phenomena are known as illusory figures.

illusory spring
What kind of 3-dimensional shape do you see?

Illusory figures depend, in part, on the presence of regular gaps within a visual arrangement. When such gaps occur, the visual system instinctively tries to resolve them into coherent forms. These gaps can be created by simple elements, such as circles. When solid black circles and partially “chipped” ones are arranged carefully, they produce striking illusory shapes.

The most familiar example is the Kanizsa triangle. Here, an illusory contour is perceived when black disks with wedge-shaped sections removed are aligned so that their edges define a triangular form in the negative space. Remarkably, this illusory region appears brighter than the surrounding page, even though its physical luminance is identical.

Kanisza triangle
Kanizsa triangle

Etherial Cross

A pattern of black dots forms a ghostly ‘X’ shape through negative space. The arrangement of dots creates a subtle sense of motion and depth. The piece combines the Ouchi effect—where contrast between figure and background generates apparent movement—with the Kanizsa illusion, where the mind completes shapes that aren’t actually drawn.

Sarcone's Illusory Cross
Fine art prints of this Op Art piece are available for purchase through my official gallery.

The effect becomes even more dramatic when the illusion is animated. Rotate the cross, for example, and the X-shaped form—with no explicit outline—appears to emerge from a rigid grid of black dots. The shape is defined solely by subtle local distortions: small asymmetric intrusions along the contours of the X disrupt the regularity of the dots, making the form pop into perception despite having no actual boundaries.

Animated Sarcone's Illusory Cross

Etherial Circle

Using the same technique, we can replace the X with a large O. Now the regular arrangement of black circles is disrupted by a ghostly central shape that seems to lift off the background, almost floating. As above, this Op Art piece combines the Ouchi effect—where the contrast between figure and background creates apparent motion—with the Kanizsa effect, where the mind completes shapes that aren’t actually drawn.

Floating O
Fine art prints of this Op Art piece are available for purchase through my official gallery.

It is also interesting to add a rotational motion to this Op Art piece. I experimented with different solutions, and this one is the simplest yet striking nonetheless.

To conclude this journey into the world of contour illusions, still using black disks as our starting point, here are a few further experiments. They explore negative superpositions, translucent effects, and the emergence of more complex forms—showing how simple elements can give rise to unexpected visual structures.

hidden beauty
Fine art prints of this Op Art piece are available for purchase through my official gallery.

The Human Condition: A Paradox

What strikes in the tiny space between God’s and Adam’s fingers in the Sistine Chapel is neither mysticism nor religion—it is humanity itself. Michelangelo, perhaps without realizing it, captures a simple yet profound truth: the hardest distance to cross does not depend on strength or span, but on “human will”—or its absence.

We perceive a tension in the image: God leans forward, taut and ready to give all He can. Adam, by contrast, extends his hand half-heartedly, hesitant, the finger limp and weak. That missing centimeter seems, at first glance, to symbolize free will—or the refusal of determinism: the choice to make a tiny gesture that can shift our understanding of life, to move forward with conviction, or to remain still, waiting for everything to arrive on its own.

The fresco speaks beyond faith: to moments when we could act, yet remain still. Stillness is not failure—it is awareness. Like Wu Wei (無為) in Zen philosophy, it is effortless action: a letting go, a recognition that life flows even when we do not grasp it. Free will and determinism fade into labels, defined only by belief.

That one-centimeter gulf becomes infinite. It stretches across light-years, embodying the human condition: our extraordinary capacity to feel and aspire, in tension with the world, facing life’s trials and the inevitability of our own mortality.

What If the Late Middle Ages Hit ‘Delete’?

I often catch myself wondering how different our art, our literature, our techniques, our architecture, our science, and all our so-called achievements would be if, at some point in history—say, right after the late Middle Ages—everything humanity had created were wiped out so thoroughly that no one could even recall what a wheel looked like. A world where no one knew whether the Venus de Milo had been a place, a painting, a wine, a poem, or perhaps an ancient weapon. And where “democracy” or “monarchy” might just as well be fireworks or seasonal mushrooms.

As for me, I suspect that the evolution of such a world would feel strangely familiar while being completely different, a kind of cosmic déjà vu. Everything reinvented, yet uncannily the same. Worn-out ideas would return with fresh paint, old opinions would resurface disguised as revelations, eccentric religions would bloom—new in appearance, ancient in essence—and intolerance would simply find new masks. I don’t imagine this world as a better one. No, not that… just the same stage with new props, perhaps a bit more entertaining.

After all, when the dinosaurs vanished in an instant, life went on—and brought forth creatures no less terrifying. Take humans, for example.

But what do you think?

Old New World

Punctum Temporis

What is an instant—the punctum temporis—that Plato called ἐξαίφνης (exaíphnēs), the sudden? Is it a vanishing point between past and future, or the hinge on which both unfold? Plato saw it as an interruption in the flow of time, a fleeting spark where change occurs, yet which itself seems to escape duration. Augustine later reflected that the present, though indivisible, lives within us as the tension between memory and expectation.

Bergson went further, arguing that real time—la durée—cannot be reduced to a series of measurable instants. If an instant is infinitely small, it cannot be summed; if it can be summed, it is no longer an instant. Thus arises the paradox: if the present is composed of infinite instants, how can it ever be said to exist?

Perhaps time is not made of points but of relations—of movement, perception, and becoming. The instant would then be less a unit of time than a threshold of consciousness, the meeting place of continuity and change. In that sense, punctum temporis is where time reveals its true nature: elusive, dynamic, and inseparable from the act of being.

The Responsive Eye

“The Responsive Eye,” held at MoMA in 1965 and organized by William C. Seitz, was a landmark exhibition in Op Art. Featuring over 100 artists—including Bridget Riley, Victor Vasarely, Richard Anuszkiewicz, and Josef Albers—it explored how geometric patterns and color could manipulate perception.

Riley stood out with her precise, rhythmic paintings that seemed to move and breathe, challenging the way we see. The show fascinated the public, drawing huge crowds, and sparked a wave of interest in optical effects across art, design, and fashion.

Critics were divided. Some celebrated its innovation and playful engagement with vision; others dismissed it as flashy spectacle, questioning the depth and seriousness of Op Art. Personally, I see it as a pivotal moment—one that reminded everyone that perception itself could be the medium, and that art could be both cerebral and exhilarating.

Further information: https://ubu.com/film/depalma_responsive.html

The Cube That Lies

I’ve always been drawn to the architecture of geometry. The hexagon, with its quiet strength and symmetry, sits at the root of so many spatial illusions—it’s the seed of cubes, isometric grids, and 3D paradoxes. From this shape, I began exploring structures that bend logic and perception, eventually giving life to a trio of optical works: Enigma 1, Enigma 2, and Enigma 3.

Each piece is built around the visual tension of the impossible cube, created by merging two tribars in perfect isometric perspective. The lines suggest solidity, yet the form escapes reality—what looks structurally sound unravels the moment the eye tries to make sense of it. That’s the game I love to play: where geometry behaves, but perception rebels.

These “Enigmas” are spatial riddles dressed in stripes and angles, each one twisting the viewer’s reading of depth, volume, and continuity in its own way.

The Construction of a Stereotype: The Neapolitan Eating Spaghetti with His Hands

Images like the one below did not emerge as authentic snapshots of daily life, but as carefully staged performances. In the late 19th and early 20th centuries, a wave of photographers—from northern Europe and even northern Italy—descended upon Naples in search of the “picturesque” and the “exotic.” They were driven by the same Romantic and Orientalist impulses that had shaped the artistic imagination since the 18th century: a fascination with the “other” as a source of aesthetic and commercial consumption. To satisfy these expectations, they asked members of the working class to pose while eating spaghetti with their hands or drinking wine directly from the flask, creating scenes that conformed to a folkloric, almost theatrical narrative designed for foreign curiosity.

In reality, Neapolitans did not habitually eat spaghetti in this manner. While the very poorest—often lacking cutlery—might occasionally have done so, this was an exception rather than a rule. The subjects of these photographs were usually recruited precisely for their visibility as impoverished figures, their gestures carefully orchestrated, and their participation purchased with a few coins. Here, the camera did not document an everyday reality; it manufactured a tableau vivant, crystallizing a myth that would outlast the moment.

This visual fiction illustrates a broader sociological and philosophical pattern: the ways in which communities are reduced to caricature when mediated through the desires of outsiders. Naples, with its intricate social fabric, vibrant markets, and rich urban life, became a stage set for clichés—its complexity compressed into a singular, digestible image. In this sense, the photograph is not merely a representation but an act of authorship, shaping knowledge and perception as much as it pretends to capture it.

The legacy of these manufactured images endures. Modern media, advertising, and even social networks continue to freeze identities into simplified, performative snapshots. Stereotypes, once formed, acquire a durability that can eclipse lived experience, influencing perceptions across generations and reinforcing asymmetries of power between observer and observed.

The “spaghetti eater” is thus emblematic of a philosophical paradox inherent to photography: while the medium claims to reveal truth, it is equally capable of constructing fictions—fictions that, once disseminated, can appear more real than reality itself. In the intersection of image, expectation, and interpretation, we confront a cautionary truth: to look at a photograph is not merely to see, but to negotiate between truth, myth, and imagination.

The Neapolitan Eating Spaghetti with His Hands

The Story of Blue

Sonne au comble de l'or
l'azur du jeune hiv
er
– Paul Valéry

For me, blue is air, wind, melancholy. It is like a Fellini film—always haunted by the whisper of the wind, the scent of things, and the fleeting moments of time we wish we could hold in an eternal present. Blue can carry regret; it is, in a way, a conservative principle. Blue has always held a strange duality: so immediate, yet once so elusive. Looking back to antiquity, it fascinates me that Homer never described the sea as blue, but as ‘wine-dark.’ In Greek, kyaneos evoked a dark, mineral depth, while glaukos hovered between gray, green, and blue. The Romans spoke of caeruleus, tied to the sky (caelum), and of lividus, the bruised, bluish tone of flesh. They never elevated blue; it was the color of outsiders, the hue of Celts painted in woad. Only the Egyptians seemed to truly revere it. They invented Egyptian blue, the first artificial pigment, and made it the shade of eternity and the divine.

In the Middle Ages, blue nearly vanished from prominence. Christian art turned to red, white, and black, leaving blue to the margins. Yet the word itself was evolving. The Germanic blāo—and its Vulgar Latin adoption, blavus—once meant something far less precise: shimmering, lustrous, dark, gray, even pale or yellowish. That ambiguity makes me realize how fluid color once was, before language fixed its boundaries. From blāo we inherited English blue and French bleu. Meanwhile, through Arabic lazaward came the words azure, azzurro, and azul, all born from lapis lazuli.

Then, in the 12th century, blue was transformed. Artists began clothing the Virgin Mary in ultramarine, ground from lapis lazuli more costly than gold. What had been humble became heavenly. Heraldry embraced azure as one of its noble tinctures, and kings like Louis IX made blue their emblem. A forgotten hue became a sacred, regal presence.

By the Renaissance, ultramarine shone as a color of prestige, truth, and constancy. Painters reserved it for the highest subjects, poets linked it to loyalty, and explorers carried its name across the seas as azul. Blue had finally claimed its place.

The modern era democratized it. Prussian blue appeared in 1704, followed by cobalt, cerulean, and synthetic ultramarine. Blue poured into uniforms, flags, and revolutions; it became the shade of liberty, of nations, of collective identity. Goethe called it spiritual, a color that retreats yet draws the soul inward.

In the 20th century, painters gave blue an entirely new destiny. The Expressionists used blue to conjure emotion, depth, and inner turbulence—think of Kandinsky, who saw blue as moving ‘toward the infinite,’ or Franz Marc, who painted blue animals to symbolize spirituality and hope. Even Van Gogh’s Starry Night swirls with blue, capturing both wonder and melancholy. Later, Picasso entered his Blue Period, transmuting sorrow into tone. Yves Klein went further still, reducing blue to its purest intensity with his International Klein Blue, turning it into an immaterial field of experience. For Klein, blue was not simply a color but ‘the most abstract color of all,’ a space in which one could lose oneself.

Today, I see blue everywhere. In the jeans that became the fabric of daily life. In corporate logos designed to inspire trust. In flags that mark belonging. Blue is calm, yet melancholy; humble, yet exalted. Once overlooked, it is now the world’s favorite color.

Blue is more than a hue. It is an idea shaped across centuries—etymologically born of caelum, blāo, and blavus; symbolically stretched between heaven and earth; culturally tied to faith, power, and identity. Its story mirrors our own: restless, mutable, and ever searching for meaning.

I’ll end with a little story from my own family. After World War II, my paternal grandfather, a house painter, bought a massive surplus of blue paint from the military. He had so much of it that whenever a client asked how he planned to paint their home, his answer was always the same, year after year: “All in blue, yes, all in blue…” (in our dialect, tutt’azzurr, tutt’azzurr).

That simple phrase stuck. Before long, the whole village started calling our family the Tuttazzurr family, and I myself became known as Giuan Tuttazzurr. Blue marked our home, but also my identity and my story—etched in memory and in name.

Moonlight Reflections on the Waters

A memory from Japan, where I lived briefly in the 1980s. This piece recalls earthy colors, organic shapes, and fragments of that time. A circle emerges from a flowing field of triangles—like ripples of moonlight dancing on the sea near Kamakura.

Immersing in my Op Art is entering a space where opposing forces meet, interlock, and balance with precision and intensity. Each piece is a silent dialogue of form, line, color, perception, and mathematical structure, anchored in the language of symbols. Beneath the surface, it engages archetypes and ancient rites that still resonate in the collective unconscious.

This unique op art piece is available as fine art prints and canvases in my online gallery.

Rediscovering Flutex: Simple Glass, Complex Illusions

I’ve been toying with the idea of revisiting an old, low-key material for my art: Flutex.

If you haven’t heard of it, Flutex is a patterned industrial glass from the 1930s and ’40s, mostly used to give a bit of privacy in bathrooms and office partitions.

In the ’70s, Op artist Sydney Cash started playing with this glass and found that its ribbed surface works like a lenticular screen—showing different images depending on how you look at it. The effect? Hypnotic, shifting artworks that change as you move around them.

It’s just simple glass, but it tricks perception in a really cool way.

I’m seriously considering giving it a try myself—there’s something about that mix of humble material and complex visual play that feels worth exploring again.