Well since the lens came back from being recalibrated the available light has been very poor so not really been able to put the lens through its paces yet.
Did however grab this shot of a sparrow on the bird feeder, camera technique not brilliant, but it has picked up some of the detail in the feathers. A faster shutter speed would no doubt have improved the head detail and frozen the slight movement. Please excuse the appalling background.
Would welcome comments and any advice.
Shooting details:- Canon 40D, 100-400mm + Canon 1.4tc, manual focus,tripod mounted, 1/100sec, f8, ISO 200, 560mm
Gerry