Test of Background Blurring and Bokeh with
EF-S 17-55mm; EF 24-105mm and EF 24-70mm lenses

The lenses were tested with a mannequin and a background containing printed letters, minilights, and sequins (source of specular light) and shelf framing to test the ability of lenses to blur background and produce bokeh. The following lenses with focal length settings and apertures were tested:

  1. EF-S 17-55mm f/2.8 IS USM at 55mm f/2.8
  2. EF 24-70mm f/2.8L USM at 50mm f/2.8 and 70mm f/2.8
  3. EF 24-105mm f/4L IS USM at 50mm f/4, 70mm f/4 and 105mm f/4

Guide to features in background to assess

Tests series
Tests run at 50mm, 55mm, 70mm and 105mm. Shot in portrait orientation. Field cropped retaining full width image.