It seems like you vectorial images in PhotoShop,Logically what you will see is a super fast camera which is a lot of hours working in PhotoShop, but to get a good idea of how to perform this type of work is perfect ..
This PhotoShop tutorial will shows a simple way to create a vector image from a flat, raster image such as a .jpg file. We will locate a good quality source image, increase its size (to preserve as much quality as possible when converting it to a vector), and convert it to a vector. We will then save the vector as a custom shape, allowing it to be used across many different designs.