This shot was taken with my E-M5 and my old Canon EF-400 f/5.6L lens. The photographer that bought my old lens let me borrow it for a short while to do some testing with it. My keeper rate was VERY low, unfortunately. It was very difficult to see if the birds were in focus or not. More often than not they were out of focus. You can click on the image to view a larger version of it.