Portrait Lens Test with Canon APS-C Camera
This review is copyright by William L. Castleman (wlcastleman.com).
There are two series of tests with Canon APS-C camera in his web page. The first is a series of tests of compact normal zoom and prime lenses and telephoto lenses to use in portrait application with Canon APS-C cameras. The second series of tests compares an array of Canon lenses at 50mm, 85mm, 135mm and 200mm with f/2.8 apertures and wider with a APS-C camera to assess the quality of background blurring and bokeh. I also suggest you to read this link – about EF 85mm f/1.8 – EF 100mm f/2 – EF 135mm f/2L.
Because of copyright, comparison and detail must be seen on the author page.