How Much has the iPhone Camera Improved?

When the iPhone was first release, the camera was nothing to write home about. However, the iPhone 4S has changed that. With 8MP, an amazing lens, and full 1080p 30FPS video, it's clearly a contender against even point and shoot cameras, let alone other cellphone cameras.
So, just how much has the camera improved over previous generations? I believe the photo above and the one below really speak for themselves.

Incredible. By the iPhone 4S, you have a camera that's not only perfect for daily use, but also for also for more professionally orientated tasks. You can see the full resolution photos at the source, here.
via Gizmodo