Yellow Birdwing (Troides Helena).
This is my favourite shot from the Butterfly Park trip the other day. Reason? Movement! It's hard enough chasing a hyperactive butterfly through the electronic viewfinder, more so when done on maximum zoom (~432mm). It was a super lucky shot as my camera just happened to be pointing at the right direction in my confusion to find the butterfly and it just happened to fly into view. I didn't even know what I shot, it's more of a reflex action in clicking the shutter once I sensed movement. I especially like how sharp the legs and flowers are in contrast to the wings, it's my best movement shot yet ^_^