Bernardo Strozzi's experience as a Capuchin monk only partly explains the certainties presented for contemplation in this master-ful canvas. Far more telling are the formal conventions of baroque painting that underscore its every detail, from its diagonal dynamic to its brazen colouring. This work can almost be read as a dictionary of Counter-Reformation precepts. 'The release of St Peter' responds to the Catholic doctrines that reinvigorated European art at the beginning of the seventeenth century. These centred on a call to arms to artists for greater realism and a more directly rendered spirituality. The angel delivering Peter from his bonds is depicted with the naturalism of an artisan going about a chore, while the saint himself is shown in glassy-eyed ecstasy - a favourite condition of baroque painting. Strozzi divides his pigment into areas of flashy impasto and delicate glazing. Flesh, fabrics, feathers and furry tufts of hair are indicated in brilliant passages of 'alla prima' painting.
AGNSW Handbook, 1999.