The renewed interest in scenic beauty in the Renaissance suggested work with a portable camera, as it was found to be an excellent aid in painting and drawing the beauties of nature.

Leone Battista Alberti (1404–1472), a Florentine ecclesiastic and artist, was the first Italian to make a notable contribution to the magic shadow story. Alberti, like the greater da Vinci, had many talents. A native of Florence, he grew up in an atmosphere of artistic culture. He was a priest, poet, musician, painter and sculptor, but most noted as an architect. He wrote De Re Aedificatoria, “Concerning architecture or building”, published after his death in 1485 and many other works, including Della Famiglia, “The Family”.

Alberti completed work on the Pitti Palace in Florence but his best design is said to be the St. Francis Church at Rimini. He also designed the new facade of St. Maria Novella Church at Florence and is believed to be the architect of the unfinished courtyard at the Palazzo Venezia which nearly 500 years later was the office of the late and unlamented Benito Mussolini. His painting, “La Visitazione”, is in the Uffizi gallery. As an ecclesiastic, Alberti was Canon of the Metropolitan Church of Florence in 1447 and later was Abbot of the San Sovino monastery, Pisa.

But it was as an artist that Alberti made his contribution to the art and science of light and shadows. He invented the camera lucida, a machine which aided artists and painters by reflecting images and scenes to be painted or drawn. The device, a modification of the “dark room”, could also be used to make it easy to copy a design. In a sense, the camera lucida was the forerunner of the modern blue-print duplicator. After Alberti had made his original drawings, an assistant, with the aid of the device, could rapidly copy them and give duplicates to the builders for use on the construction job.

Vasari’s Lives of Painters, Sculptors and Architects is the chief source of information about Alberti. That writer said Alberti was more anxious for invention than for fame and had more interest in experimenting than in publishing his results. This is an attempt to explain why Alberti’s own words of description of his camera lucida are not preserved.

Alberti was said to have written on the art of representation, explaining his “depictive showings” which “spectators found unbelievable”. According to Vasari’s description it would appear that Alberti used a form of the camera obscura or room box-camera but introduced special scenes such as paintings of mountains and the seas and the stars. In this way Alberti sought to introduce a touch of showmanship into the performances of the room camera which up to this time was used chiefly for observation of eclipses and other scientific purposes.

Though Alberti died when Leonardo da Vinci was a young man, it is certain that Leonardo knew of him, as they were natives of the same city. Perhaps da Vinci had even attended some of Alberti’s magic shadows exhibitions.

Leonardo di Ser Piero da Vinci was born near Florence in 1452 and died near Amboise, France, in 1519. In 1939, 420 years after his death, a great exhibition of the master’s works was held at Milan and parts of it were shown in the next year at the Museum of Science and Industry in Rockefeller Center, New York. The Milan exhibit included works in the following fields: studies and drawings in mathematics, astronomy, geology, geodesy, cosmography, map-making, hydraulics, botany, anatomy, optics (including proof of Alhazen’s problem of measuring the angle of reflection of light), acoustics, mechanics, and flying; not to mention sculpture, painting, drawing, sketches, architecture, town planning and military arts and sciences.

Da Vinci is best known today for his paintings, such as the renowned “Last Supper”, beloved everywhere, and the “Mona Lisa”. He was one of the truly universal geniuses. There was little indeed that he could not do.

Leonardo’s study of optics and perspective was reported in his Treatise on Painting, written about 1515 and first published at Paris in 1651, but well known prior to that time through manuscript copies. Da Vinci has been a great trial to the students and historians, for he wrote in his own special form of shorthand which was found to be extremely hard to decipher.