Best price for Sony FDR-AX53 is $958.80 inclusive of GST. This is presently the cheapest offer found from comparing prices from 4 shops in Australia.
XAVC S 4K(100Mbps): SDHC Memory Card(4GB or over,UHS-I U3 or Higher)/SDXC Memory Card(UHS-I U3 or Higher), XAVC S 4K(60Mbps)/XAVC S HD: SDHC Memory Card(4GB or over,Class10 or Higher)/SDXC Memory Card(Class10 or Higher), AVCHD,Still: Memory Stick PRO Duo (Mark 2), Memory Stick PRO-HG Duo, Memory Stick XC-HG Duo, SD/SDHC/SDXC Memory Card(Class 4 or Higher)
Optical sensor size
AVC/H.264 .mp4, AVCHD, XAVC S
The number of times the image can be enlarged with the optics of the camcorder. The optical zoom 'moves' you closer to the subject without sacrificing quality. The higher the optical zoom, the farther away you can be to take a clear, close-up image.