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[[Image:Renoir Monet pintando en su jardín de Argenteuil.jpg|thumb|Monet working "en plein air" by Renoir]]

[[Image:Renoir Monet pintando en su jardín de Argenteuil.jpg|thumb|Monet working "en plein air" by Renoir]]

''[[En plein air]]'' or '''''plein air''''' is a [[France|French]] expression meaning "in the open air", commonly used to refer to the practice of painting an entire finished picture out of doors as opposed to simply making preparatory studies or sketches. The technique was pioneered by [[John Constable]] in [[Great Britain|Britain]] and later became fundamental to [[Impressionism]].<ref>[http://www.tate.org.uk/collections/glossary/definition.jsp?entryId=334 ''Plein air'']. Glossary. The Tate Collection. 13 May 2008</ref>

'''''En plein air''''' or '''''plein air''''' is a [[France|French]] expression meaning "in the open air", commonly used to refer to the practice of painting an entire finished picture out of doors as opposed to simply making preparatory studies or sketches. The technique was pioneered by [[John Constable]] in [[Great Britain|Britain]] and later became fundamental to [[Impressionism]].<ref>[http://www.tate.org.uk/collections/glossary/definition.jsp?entryId=334 ''Plein air'']. Glossary. The Tate Collection. 13 May 2008</ref>