His masterpiece as a fresco painter is widely considered to be the fresco in the gallery of Alexander VII in the Quirinal Palace Gallery, entitled Joseph making himself known to his Brethren (1657).[2] However, Mola is considered to have been better as a painter of small pictures, especially landscapes.[3] He made six versions of The Flight into Egypt, the earliest of which is The Rest on the Flight into Egypt.
With his looser style and handling, more naturalistic palette, and interest in exploring landscape elements, Mola differs from the prevailing, highly-theoretical classicism of such leading 17th-century Roman painters as Andrea Sacchi.
^ abcdEcstasy in the Wilderness: Pier Francesco Mola's "The Vision of Saint Bruno" , Dawson W. Carr, The J. Paul Getty Museum Journal, Vol. 19 (1991), 99.