Complex sentence: The Studiolo paintings were followed by a visit to Venice in the early 1570s.This stay had the effect on Santi, of completely rejecting the "maniera" of Bronzino, embracing a classical Reformist and naturalistic style.
Split into simpler sentences: The Studiolo paintings were followed by a visit to Venice in the early 1570s. After visiting Venice, Santi completely rejected the "maniera" of Bronzino, and embraced a classical Reformist and naturalistic style.