The Bokeh Effect
In photography, bokeh is an aesthetic quality of the blur produced in out of focus parts of an image. Bokeh has also been defined as "the way the lens renders out-of-focus points of light".
Differences in lens aberrations and aperture shape cause very different bokeh effects. Some lens designs blur the image in a way that is pleasing to the eye, while others produce distracting or unpleasant blurring. Photographers may deliberately use a shallow focus technique to create images with prominent out-of-focus regions, accentuating their lens's bokeh.
Bokeh is often most visible around small background highlights, such as specular reflections and light sources, which is why it is often associated with such areas. However, bokeh is not limited to highlights; blur occurs in all regions of an image which are outside the depth of field.
Please have a look at my Gallery with some pictures using the Bokeh Effect.
In the Gallery section you can see a range of photographs I have taken with my Camera Phone and my Digital SLR. I use a Huawai P20 with a Leica Lens and a Nikon D5300 with a variety of Lenses.
Check out some of the special Projects I have created for my Photography Classes.