Chasing Birds with the Sigma 120-400mm F4.5-5.6 » Oyster catcher and terns beach 1200
Here’s the same oystercatcher on the waterline with three of the common terns in the foreground. Notice how shallow the depth of field is at maximum aperture when zoomed all the way to 400mm. And look at how that yellow eye pops in this frame! Canon EOS Rebel XTi and 120-400mm at 1/1600 F5.6 ISO 400.