The S3 has replaced the F3. Here's what we had to say about the F3 when it was released in early 2010:
The F3 is Panasonic's new entry-level model for 2010. It features a 12.1 megapixel sensor, 4x optical zoom, 2.7-inch LCD screen, 720p HD video at 30 frames per second, and is compatible with the new super-high-capacity SDXC memory card standard. For $130 (did we mention HD video?), this is a solid deal.