Janez Puhar

Let us present one of Kranj’s famous sons, Janez Puhar, inventor of photography on glass.

Watch a short animated film showing his invention.

5 interesting facts:

First Slovenian photographer.

One of the first famous daguerreotypists in Slovenia.

Inventor of photography on glass.

He put Slovenian innovation on the world map due to his development in photography.

A monument to him stands in the Prešeren Grove Park.

Short biography:

Janez Puhar was born on 26 August 1814, into a stonemason family in Kranj. He had a brother, Matija, and three sisters, Franca, Johana, and Terezija. He excelled in foreign languages, mathematics and natural sciences and he also enjoyed drawing. His physics and chemistry teacher, Janez Kersnik, inspired him to conduct various chemical experiments. Although he wanted to devote himself to art, he decided to become a priest at his mother’s request. In 1864, terminally ill with tuberculosis, he returned to his native Kranj and died at his home on 7 August.

Check out the Cabinet of Janez Puhar or his memorial house that invites visitors of all ages to learn about the secrets and the life of this interesting inventor. More information can be found HERE.

Puhar’s invention in photography:

The first printed booklet on daguerreotype was published in 1839, and Puhar mastered this technique a year later. Daguerreotype is a unique light image on a silver-plated metal base. However, as this was a very demanding, time-consuming, and expensive technique, Puhar began to develop his own technique, called light painting. This technique was cheaper and easier, using glass plates.

Although Puhar discovered photography on glass earlier, he was overtaken by the Frenchman Abel Niepce in 1847 in terms of recognition in academic circles. Janez Puhar only managed to gain recognition in 1851 and 1852, and therefore remained in Niepce’s shadow.

Process:

Imate radi kulinarične dogodke, ki povezujejo druženje in odlično hrano? Potem ste prišli na pravo mesto, saj vam v Kranju z veseljem postrežemo prav to.

1. A cleaned plate of ordinary window glass is coated with a thin layer of sulphur vapours
2. The plate is then exposed to iodine vapours for a few seconds in a darkened room
3. It is then placed in a simple, handmade camera based on the principle of a camera obscura (a box with a hole through which light penetrates, and an inverted image of the object in front of the opening is projected onto its back wall). A lens made of ordinary glass with a focal length of two inches (approximately 52–53mm) is used as the lens.
4. This was followed by the exposure of the plate, during which vapours of mercury, which was heated, settled from an iron container at the bottom of the camera. The exposure initially lasted about a minute, then only 15 seconds in strong light.
5. The image was then intensified with bromine vapours and fixed with alcohol.
6. To preserve the resulting image, the glass plate was coated with dark varnish. The glass plate was then covered with another plate and the edges were glued on all four sides to protect it from moisture and dust.

The resulting photograph:

THE EVENT IS CANCELED…

Are you interested in what's happening in Kranj? Stay up to date!

I am interested in