Check out the evolution of cameras on Samsung phones in this new infographic
Samsung's first phone to feature a camera (a VGA one, to be exact), was called SCH-V200. This was released in South Korea in 2000, and it seems to be the world's first mobile phone with a built-in camera. Five years later, in 2005, Samsung introduced its first handset with a 7 MP camera: the SCH-V770. Fast forward to 2010, when the company's first Galaxy S smartphone was launched, bringing a 5 MP camera with Panorama Shot.
The following Galaxy models obviously brought improvements, not just in terms of Megapixels, but more importantly in terms of image and video quality. The last smartphone that Samsung is mentioning in the infographic is the Galaxy A5, which doesn't have a better rear camera than previous handsets (like the Galaxy S5 or Note 4), but comes with a 5 MP front-facing shooter that lets you take "attractive selfies in high-resolutuion", helped by features like Beauty Face and Wide Selfie.
Before checking out the infographic below, you should definitely also take a look at this article to see how image and video quality improved over time on Samsung's Galaxy smartphones, from the original Galaxy S to the Galaxy S5.
source: Samsung Tomorrow