Plein-air painting is the art of painting out-of-doors, on site, and completing the work at one sitting. In this lively guide, acclaimed artist, author, and instructor Cathy Johnson provides a friendly introduction to all facets of plein-air painting—from selecting and using basic materials (including pencils, pastels, watercolors, acrylics, brushes, and papers) to weathering outdoor conditions and dealing with the challenges of capturing ever-changing light. Richly illustrated with studies, sketches, and paintings by the author and others, this book will inspire and guide beginners and accomplished artists alike in this time-honored pastime.