Images taken with Sigma APO120-400mm F4.5-5.6 DG OS HSM + Canon 40D.
Image #1 Straight from camera 400mm - Hand held.
Image #2 Same image cropped and photoshop.
Image #3 Bee Eater taken at 352mm hand held.
Image #4 Raven taken at 560mm ( 400mm + Tamron 1.4x TC )
Hand held + Auto focused at 560mm
David.