Long before Photoshop or Instagram filters, artists were already cheating—or at least, they were working smarter. The camera obscura, a dark room with a tiny hole that projects the outside world onto a surface, has been around since antiquity. But while everyone knows Vermeer and Canaletto dabbled with optical aids, a whole cast of lesser-known painters used these tracing tools to create works that still hang in museums today. Here are the ones history forgot to mention.
Most people credit Leonardo da Vinci with describing the camera obscura in detail, but Francesco di Giorgio Martini, a Sienese architect and painter, was writing about it decades earlier. In his 1475 treatise, he described using a lens to project images onto a screen for tracing. His own paintings, with their precise architectural perspectives, suggest he practiced what he preached. Yet his name rarely comes up in the optical-tracing conversation.
Johannes Torrentius was a 17th-century Dutch painter whose still lifes are so photographically precise that they look almost anachronistic. He was known to use a camera obscura and even a concave mirror to project his subjects onto his canvas. His work is a testament to how optical aids can achieve a level of realism that is almost uncanny. Torrentius's life was as dramatic as his art—he was tried for heresy and later imprisoned—but his technical mastery remains a hidden gem in art history.
In the late 18th century, Thomas Jones, a Welsh landscape painter, produced a series of small oil sketches of rooftops in Naples that are now celebrated for their modern, almost abstract quality. What few realize is that Jones used a portable camera obscura to block out these compositions. His sketches, with their loose, immediate brushwork, show how tracing can free you up to focus on tone and color rather than worrying about getting the drawing right.
Corot is famous for his soft, atmospheric landscapes, but he was also a secret user of the camera lucida—a device that projects an image onto paper so you can trace it. While his finished paintings look anything but mechanical, his plein-air studies were often traced and then refined. Corot's approach shows that tracing is not a shortcut; it's a starting point. You can trace the basic shapes and still create something deeply personal and expressive.
Marie Louise Élisabeth Vigée Le Brun, the official portraitist of Marie Antoinette, was one of the few women of her time to achieve international fame. She was known to use a camera obscura to capture her sitters' likenesses with uncanny accuracy. Her portraits are full of life, not stiff or mechanical, proving that optical aids don't have to drain the soul from your work. They can actually help you capture a true likeness faster, leaving more time for expression.
These artists all shared a willingness to use whatever tools were available to get better results. They didn't see tracing as a crutch; they saw it as a way to bypass the laborious process of measuring and get straight to the act of painting. In today's world, we have even better tools—like EchoDraw, which turns your phone into a tracing lightbox that works on any paper, anywhere. No physical lightbox, no shine-through, just a transparent overlay on your camera feed. It's private, it's a one-time purchase, and it lets you trace reference photos directly onto your sketchbook.
The next time you're struggling with a tricky perspective or a complex portrait, remember these forgotten masters. They didn't wait for inspiration; they made their own light. Whether you're using a 16th-century camera obscura or a modern app, the goal is the same: capture what you see, and then make it yours. These artists prove that tracing is not a shortcut—it's a tool for seeing better.
"Art is not what you see, but what you make others see." — Edgar Degas
So go ahead, trace that reference photo, and then paint over it with your own vision. The camera obscura painters would be proud.
Grab EchoDraw and turn any photo into a live tracing guide.