A novice artist often finds it nearly impossible to approach the realism of such classic art, despite skill in applying the paint. In fact, Renaissance masters took extreme measures to ensure that none of the texture of the canvas came through. This required a painstaking, months-long process of layering the raw canvas with (usually) lead-white paint, then polishing the surface, and then repeating. The final product had little resemblance to fabric, but instead had a glossy, enamel-like finish. Though this may seem an extreme measure to the modern painter, it is crucial if photographic
realism is the end goal.
With a properly prepared canvas, the painter will find that each subsequent layer of color glides on in a "buttery" manner, and that with the proper consistency of application (fat over lean technique), a painting entirely devoid of brushstrokes can be readily achieved.