Perugino’s Christ Giving the Keys to St. Peter and Gentile Bellini’s Procession of the Relic of the True Cross before the Church of St. Mark were painted fifteen years apart and in different parts of Italy (Venice and Rome), but both paintings use similar technique to convey depth in efforts to replicate and service the human gaze on a two dimensional surface. Both paintings demonstrate use of linear perspective to achieve this. There is a horizon line with a vanishing point in both pieces, Perugino’s painting employs a horizon line which cuts the painting all the way across to delineate where Earth ends and the sky begins, Bellini’s painting is a bit different in that the horizon line does not go all the way across the painting, but instead
