Not quite sure where I lost it, only realised it after getting through the departure gate. I've travelled on T4 train to Bondi Junction @ 1030am, sat on the upper section. Then change to bus 400 from Bondi Junction to the airport at 1107am. Reached domestic T2 airport at 12pm and was waiting for my friend for 5 minutes who went for toilet in front of the airport information counter on the arrival floor. Was rushing to the departure gate only realised the lost of it. It contain photos of me and my girlfriends and some of my family gathering. Appreciate if anyone found the camera or the SD card can post it up here. Thank you a lot!