bokeh actually means "blur" where it is aesthetic quality of the blur. it is also it is the characteristic of the image, not the lens itself.
here with so many example of bokeh photography.
for example, potrait photography will use shallow depth of field to achieve an out-of-focus background and make the subject stand out.
kalau kita tengok gambar bokeh yang dihasilkan amat cantik. Ianya juga bergantung kepada penggunaan lens,depth of field and many more factors that contribute to bokeh photography,depend on what type of picture is being taken.
no copyright infringement. :)