In this series the actions of the birds in flight was captured in continuous shooting mode at 6 frames per second.
A moderate file size was selected so that the camera's buffer would not become overloaded during recording.
The 50mm f/1.8 lens was used so that suitably short exposure times (about 1/800s) could be used to freeze the wing motion.
An aperture of no more than f/8 was needed to achieve depth of field of about 100mm at 5m range.
Fixed focus set to a range just before the bird would reach the rail was adjusted using a temporary target before food was placed.
A remote controller was used to initiate continuous shooting as the bird approached. The unit used was the modestly priced but very effective Phottix Cleon N8. The image shows the controller attached for convenience on the camera's hot-shoe, and the hand-held remote trigger. The device is available from: http://www.hksupplies.com