The terms alla prima mean “at initially try”. Therefore alla prima painting is completing a painting at one go and at the first try. Alla prima works are almost invariably small canvases as it’s tough to completely finish a huge canvas during one try.
Many alla prima paintings are painted in the open air and the explanation why the painter uses this strategy is because of the light. The light changes from just one portion of the day to another and when the brightness is an essential component of the painting, the artist has to complete the painting prior to the light changes. For example, if the artist is painting a sunset scene, he or maybe she receives just a little time to complete the work as the light changes soon.