Emotions and feelings in this type of art are connected with the subtext. What we see here is relevant, it is a realistic scene executed with incredible skill. It's beautiful, and it pleases the eye. It's well shaded and lit, it's a clear picture. The feeling comes from a thorough study of the painting and knowledge of the art world, so to speak. Learn about the emotions that the author was trying to express by simply watching the picture, and then studying it later, forming and changing opinions based on education.