Fun bokeh shot of gold and green finch in flight. Shots 6871 to 6981 were all taken with tripod under a grey overcast at mostly F4 and 800th/s and high 2000 iso which is hardly enough speed to stop the wings. The 200-400, in my experience, does not have the same smooth bokeh (out of focus effect) than the 500 but its flexibility permits wider scenes around the feeders.