Saint Luke the Evangelist is one of the most impressive panel paintings by Master Theodoric, intended for the decoration of the Chapel of the Holy Cross in Karlštejn.

The drapery is modelled in relief and uses incident light to illuminate the top layer, while the deep parts are highlighted with dark blue.

The head of St. Luke is modelled with knowledge of real physiognomy, and its expression is enlivened by the direct gaze of the eyes on the viewer.

It is characterized by the typical features of Theodoric's style - the slightly larger-than-life size of the broad face, the grey incarnation and the rich beard.

The painter thus disrupts the regular geometric order of the picture frames on the wall of the Chapel of the Holy Cross, which limited his creative freedom.

The background of the painting consists of a plastic decorative ornament known as pastiglia, which originated in Italy and was almost exclusively used in Bohemia by Theodoric.

Theodoric's stocky and short stature, massive head with fleshy cheeks and protruding nose, and wide-open eyes with large pupils reveal a knowledge of human anatomy.

The painter took care in selecting the grain size of the pigment, achieving high transparency of the layers with the help of an oil binder.

Later he was the subject of many famous painters (Correggio, Frans Hals, El Greco, Titian, Guercino, Luca Giordano).