Bridget Riley is an artist I came across from researching artists online. My first impression of Bridget Riley's work was how great the illusions were and I wondered how she had created them. I decided to find out more about her work and start understanding how she made these effects in her art.
I found out that Bridget Riley began her exploration of abstract painting in the 1950s, when she was interested by the optical effects in the works of the 19th-century pointillist Georges Seurat. She explored optical phenomena and juxtaposes colour either by using a chromatic technique of identifiable hues or by selecting achromatic colours (black, white or grey). This became a really successful technique for her and really stood out and worked very well. It gave a closer and outer perspective using different colours.
Bridget Riley mixes her colours to get the exact hue and intensity for the pieces she's working on. She explores with colours a lot to see if they blend or contrast with one another. This is what gives the perspective effect. Bridget Riley first marks her work up on a large canvas and then paints the piece entirely by hand, first in acrylics, then in oil.
What Bridget Riley looks for is finding visual effects and wanting people to feel that the painting is moving but actually isn't. Some of Bridget Riley's work shows different kinds of visual effects from shaking, moving up and down to side to side.

'Movement in Squares' this is one of Bridget Riley's pieces created in 1961. In this piece she only uses squares, when you look at the piece you get a feeling like the squares are coming towards your or going further away from you. All of the squares stay the same but it's just the width which changes which gives the optical effect.