This book investigates the methodology of capturing the atmospheric essence of natural landscapes through the practice of plein air watercolour painting. Ashley Jackson, a seasoned practitioner of the medium, utilizes his extensive experience to argue that direct observation in the field is essential for authentic landscape representation. The text provides a structured framework for artists to transition from studio-based work to the challenges and rewards of outdoor painting.

The text serves as a practical manual for artists seeking to refine their observational skills and technical proficiency in watercolour. Its focus on the specific challenges of outdoor environments provides a clear, actionable guide for both intermediate and advanced painters.