Answer:
-Impressionism got its start when several painters began using more natural methods of lighting their work and looking at the world with freshness and immediacy.
-Their paintings were refused by the official Salon. Because they have certain aims in common, they band together to exhibit, often in a photographer’s Paris studio.
-An Impressionist paints landscapes and outdoor scenes outside, often working for a very short period of time.
-Although French painters earlier in the century had also confronted a landscape directly, as had the English painter Constable in some of his smaller oil paintings, these artists used more conventional (and therefore acceptable) colors.
Hope this helps:)