Impressionism incorporates the techniques of plein-air, in that it makes use of natural light and gives an accurate representation of that light.

The Impressionists rebelled against the conventional ideas of painting in the 19th century by depicting people often doing everyday things, now seen as normal but unusual for the time.

The techniques which painters used also changed, with Impressionists often using small and visible brushstrokes to give an “impression” of what they saw, trying to express more movement and natural light.

Under the Trees, Ranelagh | Sir John Lavery | 1898 | Private Collection | PD

This painting Under The Trees, Ranelagh is an example of the influence that Impressionism had on Lavery.  

In this painting visible brushstrokes evoke similarities to French Impressionists, as coloured light reflects on the evening water and between gaps in the tree cover.

Summertime | Walter Osborne | 1901 | Harris Museum and Art Gallery, Preston UK | PD

Summertime by Walter Osborne illustrates Impressionist sensibilities. Osborne paints dappled summer light falling onto the ground and across the figures of young children gathered together in a park.

The impressionistic use of light creates the summer atmosphere that Osborne saw before him, and translates it onto the canvas.