who is considered the pioneer impressionist painter with the work impression: sunrise
Because the first exhibition of the Impressionists was this month in 1874 and there is a major exhibition at the National Gallery, I thought I would take a look at Impressionism. I had a general idea of what it was but as I looked further into it I found out more about why these artists were pioneers and what they were trying to achieve. I thought I would see if I could paint in the style of the Impressionists by following their philosophy and the Impressionist painting techniques.
The Sennelier oil colours I used.
（Music in the Tuileries, 1862）
A number of identifiable techniques and working habits contributed to the innovative style of the Impressionists. Although these methods had been used by previous artists—and are often conspicuous in the work of artists such as Frans Hals, Diego Velázquez, Peter Paul Rubens, John Constable, and J. M. W. Turner—the Impressionists were the first to use them all together, and with such consistency. These techniques include:
In the early 1860s, four young painters—Claude Monet, Pierre-Auguste Renoir, Alfred Sisley, and Frédéric Bazille—met while studying under the academic artist Charles Gleyre. They discovered that they shared an interest in painting landscape and contemporary life rather than historical or mythological scenes. Following a practice that had become increasingly popular by mid-century, they often ventured into the countryside together to paint in the open air,  but not for the purpose of making sketches to be developed into carefully finished works in the studio, as was the usual custom.  By painting in sunlight directly from nature, and making bold use of the vivid synthetic pigments that had become available since the beginning of the century, they began to develop a lighter and brighter manner of painting that extended further the Realism of Gustave Courbet and the Barbizon school. A favourite meeting place for the artists was the Café Guerbois on Avenue de Clichy in Paris, where the discussions were often led by Édouard Manet, whom the younger artists greatly admired. They were soon joined by Camille Pissarro, Paul Cézanne, and Armand Guillaumin. 
The first group exhibition was in Paris in 1874 and included work by Monet, Auguste Renoir, Edgar Degas and Paul Cezanne. The work shown was greeted with derision with Monet’s Impression, Sunrise particularly singled out for ridicule and giving its name (used by critics as an insult) to the movement. Seven further exhibitions were then held at intervals until 1886.
Other core artists of impressionism were Camille Pissarro and Berthe Morisot with Edgar Degas and Edouard Manet also often associated with the movement.
It’s easy to forget that technology drastically affected prior generations, too.
An ideal example is the introduction of portable easels and oil paints in tubes, an innovation of the 1870s that facilitated creation of impressionist paintings.