There is no doubt that the iPhone camera is perhaps the most popular camera in the world , but this situation was not so in the past with the first iPhone and iPhone 3G, which carry the 2 megapixel camera only! With no flash, all of this would degrades the iPhone camera in general.
In fact, since Apple released the iPhone 3G, Apple made a lot of significant improvement on the cameras subsequent generations, for example, the accuracy of the camera evolved from a 3.2-megapixel to 5 megapixel and then to the 8-megapixel, and today with us some pictures that someone gathered that compares iPhone camera's image in every generation !
It's nice to see how the iPhone camera has improved over the years, every image looks better than its predecessor in one way or another, whether it's sharpness, lighting, or colors....
According to recent rumors, it is also expected that Apple will improve the camera of the next generation of the iPhone, so that it may become 13-megapixel.