The GF1 adopts the micro four thirds system standard, which was developed as an extended version of the four thirds system standard for digital camera systems. The GF1 is small enough to take anywhere yet sophisticated enough to take you as far into photography and movies as you want to go. This sensor is also advantageous for photo and movie recording with its high S/N, thanks to a circuit structure that is unaffected by the noise generated in each of the circuits. It results in clear images even when taken at high ISO sensitivity. The hybrid GF1 lets you take both high-quality photos and HD movies. You can shoot breathtaking HD movies in AVCHD Lite format (MPEG-4/H.264) backed by the high sound quality of Dolby Digital Creator. A dedicated ""movie record"" button on the top lets you instantly start recording movies while shooting photos, so you don't miss a second of the action.