The H40 boasts Panasonic's advanced O.I.S. Detecting and correcting hand-shake around 4,000 times per second, this high-performance system is about eight times more effective than previous systems and suppresses even tiny amounts of blurring caused by hand-shake. The SDR-H40, offers a 42X zoom.This hybrid model can record on either an SD (or SDHC) memory cards or their built-in hard disks. The SDR-H40 has a huge 40GB hard disk.The H40 can hold up to 36 hours of memory. This model protects data well too, thanks to its exceptional reliability. This is made possible by the super-reliable SD memory card, which does not require any kind of transport mechanism, together with an Anti-Shock Shield that helps protect the built-in hard disk from the effects of external impact. With its extended recording times and rugged designs, this model is ideal for shooting lengthy events or for taking on the road. It also offers a function that simplifies the process of copying recordings from the memory card or hard disk to a DVD disc.